Secondary Qualities are not 'extended' but 'intensive'; their effects are not augmented by addition of parts, but by increased operation of the medium. Hence they are not measured directly, but by 'scales'; not by 'units', but by 'degrees'.

The word liberty in the mouth of Mr. Webster sounds like the word love in the mouth of a courtesan.

I saw a Divine Being. I'm afraid I'm going to have to revise all my various books and opinions.

If a single cell, under appropriate conditions, becomes a man in the space of a few years, there can surely be no difficulty in understanding how, under appropriate conditions, a cell may, in the course of untold millions of years, give origin to the human race.

A modern theory of knowledge which takes account of the relational as distinct from the merely relative character of all historical knowledge must start with the assumption that there are spheres of thought in which it is impossible to conceive of absolute truth existing independently of the values and position of the subject and unrelated to the social context. Even a god could not formulate a proposition on historical subjects like 2 x 2 = 4, for what is intelligible in history can be formulated only with reference to problems and conceptual constructions which themselves arise in the flux of historical experience.

He that in his studies wholly applies himself to labour and exercise, and neglects meditation, loses his time, and he that only applies himself to meditation, and neglects labour and exercise, only wanders and loses himself.

And that you may know... what kind of writings I mean, I shall name to you the learned Gassendus his little Syntagma of Epicurus's philosophy, and that most ingenious gentleman Monsieur Descartes his principles of philosophy. For though I purposely refrained, though not altogether from transiently consulting about a few particulars, yet from seriously and orderly reading over those excellent (though disagreeing) books, or so much as Sir Francis Bacon's Novum Organum, that I might not be prepossessed with any theory or principles, till I had spent some time in trying what things themselves would incline me to think; yet beginning now to allow myself to read those excellent books, I find by the little I have read in them already, that if I had read them before I began to write, I might have enriched the ensuing essays with divers truths, which they now want, and have explicated divers things much better than I fear I have done.

It is hard to believe that this simple truth is not understood by those leaders who forbid their followers to use effective contraceptive methods. They express a preference for 'natural' methods of population limitation, and a natural method is exactly what they are going to get. It is called starvation.

The method of scientific investigation is nothing but the expression of the necessary mode of working of the human mind.

If the only alternative to fascism we produce is a corporate-driven, milquetoast, neoliberal Democratic Party, fascism will come to America. Let us be very clear. It's like a Weimar America.

Someone once asked me, "If you had your choice, Dr. Asimov, would it be women or writing?" My answer was, "Well, I can write for twelve hours at a time without getting tired."

If Governments neglect to invite what noble intellect there is, then too surely all intellect, not omnipotent to resist bad influences, will tend to become beaverish ignoble intellect; and quitting high aims, which seem shut up from it, will help itself forward in the way of making money and such like; or will even sink to be sham intellect, helping itself by methods which are not only beaverish but vulpine, and so "ignoble" as not to have common honesty.

There are depths in man which go down the length of the lowest Hell, as there are heights which reach the highest Heaven; - for are not both Heaven and Hell made out of him, everlasting Miracle and Mystery that he is?

He did not, and could not, understand the meaning of words apart from their context. Every word and action of his was the manifestation of an activity unknown to him, which was his life.

The pity of all this is, you know, a man like that [Sri Ramakrishna] has to have disciples, or no one would ever hear about him. But somehow, as the generations pass, the flame dies out. And eventually the disciples kill him.I wish that there was a way of putting a time-bomb into scriptures and records - not a time-bomb, but some kind of invisible ink, so that all scriptures would un-print themselves about fifty years after the master's death. And just dissolve.

Nothing deserves to be undone, doubtless because nothing deserved to be done.

Most people, at a crisis, feel more loyalty to their nation than to their class.

According to Christian teachers, the essential vice, the utmost evil, is Pride. Unchastity, anger, greed, drunkenness, and all that, are mere fleabites in comparison: it was through Pride that the devil became the devil: Pride leads to every other vice: it is the complete anti-God state of mind.

Thinking men and women the world over are beginning to realize that patriotism is too narrow and limited a conception to meet the necessities of our time.

Sabbath rest does not follow creation; it brings creation to completion.

The science of the age, in short, is physical, chemical, physiological; in all shapes mechanical. Our favourite Mathematics, the highly prized exponent of all these other sciences, has also become more and more mechanical. Excellence in what is called its higher departments depends less on natural genius than on acquired expertness in wielding its machinery. Without undervaluing the wonderful results which a Lagrange or Laplace educes by means of it, we may remark, that their calculus, differential and integral, is little else than a more cunningly-constructed arithmetical mill; where the factors, being put in, are, as it were, ground into the true product, under cover, and without other effort on our part than steady turning of the handle. We have more Mathematics than ever; but less Mathesis.

There is an almost universal tendency, perhaps an inborn tendency, to suspect the good faith of a man who holds opinions that differ from our own opinions. ... It obviously endangers the freedom and the objectivity of our discussion if we attack a person instead of attacking an opinion or, more precisely, a theory.

I recall an endless desert of infinite and flaming matter. I am burning! I pass through immeasurable, unorganized time, completely done, despairing, crying in the wilderness. And slowly the flame subsides, the womb of matter grows cool, the stone comes alive, breaks open, and a small green leaf uncurls into the air, trembling. It clutches the soil, steadies itself, raises its head and hands, grasps the air, the water, the light, and sucks at the Universe.

"What is truth?" is a fundamental question. But what is it compared to "How to endure life?" And even this one pales beside the next: "How to endure oneself?" - That is the crucial question in which no one is in a position to give us an answer.

Be kind. Don't kill for any reason. Don't even kill out of self-defense. Really - I mean that. Don't take any more than you need of anything. Help others.

The appreciation of the merits of art (of the emotions it conveys) depends upon an understanding of the meaning of life, what is seen as good and evil. Good and evil are defined by religions.

War prosperity is like the prosperity that an earthquake or a plague brings.

A witty statesman said, you might prove anything by figures.

Gold is now money with reference to all other commodities only because it was previously, with reference to them, a simple commodity.

Temperance is that discreet regulation of the desires and passions, by which we are enabled to enjoy pleasures without suffering any consequent inconvenience. They who maintain such a constant self-command, as never to be enticed by the prospect of present indulgence, to do that which will be productive of evil, obtain the truest pleasure by declining pleasure.

Just as man as a social being, cannot in the long run exist without a tie to the community, so the individual will never find the real justification for his existence, and his own spiritual and moral autonomy, anywhere except in an extramundane principle capable of relativizing the overpowering influence of external factors.

In order to touch the heart and gain the confidence, the assent, the adhesion, and the co-operation of the illiterate legions of the proletariat - and the vast majority of proletarians unfortunately still belong in this category - it is necessary to begin to speak to those workers not of the general sufferings of the international proletariat as a whole but of their particular, daily, altogether private misfortunes. It is necessary to speak to them of their own trade and the conditions of their work in the specific locality where they live; of the harsh conditions and long hours of their daily work, of the small pay, the meanness of their employer, the high cost of living, and how impossible it is for them properly to support and bring up a family.

Alas, our noble men of genius, Heaven's real messengers to us, they also rendered nearly futile by the wasteful time;-preappointed they everywhere, and assiduously trained by all their pedagogues and monitors, to "rise in Parliament," to compose orations, write books, or in short speak words, for the approval of reviewers; instead of doing real kingly work to be approved of by the gods!

I resolved from the beginning of my quest that I would not be misled by sentiment and desire into beliefs for which there was no good evidence.

I wrote the books I should have liked to read. That's always been my reason for writing. People won't write the books I want, so I have to do it for myself.

Heaven knows what seeming nonsense may not to-morrow be demonstrated truth.

The vices respectively fall short of or exceed what is right in both passions and actions, while virtue both finds and chooses that which is intermediate.

If this is the best of possible worlds, what then are the others?

If we do not return to the old maxims, if education is not restored into the hands of priests, and if science is not every where placed in the second rank, the evils which await us are incalculable: we shall become brutalized by science, and this is the lowest degree of brutality.

All testing, all confirmation and disconfirmation of a hypothesis takes place already within a system. And this system is not a more or less arbitrary and doubtful point of departure for all our arguments; no it belongs to the essence of what we call an argument. The system is not so much the point of departure, as the element in which our arguments have their life.

Without doubt, if we are to go back to that ultimate, integral experience, unwarped by the sophistications of theory, that experience whose elucidation is the final aim of philosophy, the flux of things is one ultimate generalization around which we must weave our philosophical system.

If you would convince a man that he does wrong, do right. But do not care to convince him. Men will believe what they see.

A wise man's kingdom is his own breast: or, if he ever looks farther, it will only be to the judgment of a select few, who are free from prejudices, and capable of examining his work. Nothing indeed can be a stronger presumption of falsehood than the approbation of the multitude; and Phocion, you know, always suspected himself of some blunder when he was attended with the applauses of the populace.

How can he [today's writer] be honored, when he does not honor himself; when he loses himself in the crowd; when he is no longer the lawgiver, but the sycophant, ducking to the giddy opinion of a reckless public.

When we speak of the commerce with our [American] colonies, fiction lags after truth, invention is unfruitful, and imagination cold and barren.

I feel effective, competent, likely to do something positive only when I lie down and abandon myself to an interrogation without object or end.

And why should man, added he, pretend to an exemption from the lot of all other animals? The whole earth, believe me, PHILO, is cursed and polluted. A perpetual war is kindled amongst all living creatures. Necessity, hunger, want, stimulate the strong and courageous: Fear, anxiety, terror, agitate the weak and infirm. The first entrance into life gives anguish to the new-born infant and to its wretched parent: Weakness, impotence, distress, attend each stage of that life: and it is at last finished in agony and horror.

Blessed are the poor in spirit, for theirs is the kingdom of heaven. Blessed are those who mourn, for they will be comforted. Blessed are the meek, for they will inherit the earth. Blessed are those who hunger and thirst for righteousness, for they will be filled. Blessed are the merciful, for they will be shown mercy. Blessed are the pure in heart, for they will see God. Blessed are the peacemakers, for they will be called sons of God. Blessed are those who are persecuted because of righteousness, for theirs is the kingdom of heaven. Blessed are you when people insult you, persecute you and falsely say all kinds of evil against you because of me. Rejoice and be glad, because great is your reward in heaven, for in the same way they persecuted the prophets who were before you.

A righteous government is of all the most to be wished for,Bearing of blessing and good fortune in the highest.Guided by the law of Truth, supported by dedication and zeal,It blossoms into the Best of Order, a Kingdom of Heaven!To effect this I shall work now and ever more.