The truth is sum, ergo cogito - I am, therefore I think, although not everything that is thinks. Is not consciousness of thinking above all consciousness of being? Is pure thought possible, without consciousness of self, without personality? Can there exist pure knowledge without feeling, without that species of materiality which feelings lends to it? Do we not perhaps feel thought, and do we not feel ourselves in the act of knowing and willing? Could not the man in the stove [Descartes] have said: "I feel, therefore I am"? or "I will, therefore I am"? And to feel oneself, is it not perhaps to feel oneself imperishable?

There is only one way to science-or to philosophy... to meet a problem, to see its beauty and fall in love with it; to get married to it, and to live with it happily, till death do ye part-unless you should meet another... more fascinating problem, or... obtain a solution. But even if you do... you may... discover, to your delight, the... a whole family of enchanting... perhaps difficult problem children for whose welfare you may work, with a purpose, to the end of your days.

One can mistrust one's own senses, but not one's own belief. If there were a verb meaning "to believe falsely," it would not have any significant first person, present indicative.

I assert(1) There is no method of discovering a scientific theory.(2) There is no method of ascertaining the truth [i.e., verification] of a scientific hypothesis...(3) There is no method of ascertaining whether a hypothesis is 'probable', in the sense of the probability calculus.

When you have understood that nothing is, that things do not even deserve the status of appearances, you no longer need to be saved, you are saved, and miserable forever.

Nature ... is inexorable and immutable; she never transgresses the laws imposed upon her, or cares a whit whether her abstruse reasons and methods of operation are understandable to men. For that reason it appears that nothing physical which sense-experience sets before our eyes, or which necessary demonstrations prove to us, ought to be called in question (much less condemned) upon the testimony of biblical passages which may have some different meaning beneath their words. For the Bible is not chained in every expression to conditions as strict as those which govern all physical effects; nor is God any less excellently revealed in Nature's actions than in the sacred statements of the Bible.

The natural way of doing this [seeking scientific knowledge or explanation of fact] is to start from the things which are more knowable and obvious to us and proceed towards those which are clearer and more knowable by nature; for the same things are not 'knowable relatively to us' and 'knowable' without qualification. So in the present inquiry we must follow this method and advance from what is more obscure by nature, but clearer to us, towards what is more clear and more knowable by nature. Now what is to us plain and obvious at first is rather confused masses, the elements and principles of which became known to us by later analysis...

Creativity is the universal of universals characterizing ultimate matter of fact. It is that ultimate principle by which the many, which are the universe disjunctively, become the one actual occasion, which is the universe conjunctively. It lies in the nature of things that the many enter into complex unity.

We have repeatedly observed that while any whole is evolving, there is always going on an evolution of the parts into which it divides itself; but we have not observed that this equally holds of the totality of things, which is made up of parts within parts from the greatest down to the smallest.

Only what we have not accomplished and what we could not accomplish matters to us, so that what remains of a whole life is only what it will not have been.

State and government are the social apparatus of violent coercion and repression. Such an apparatus, the police power, is indispensable in order to prevent anti-social individuals and bands from destroying social co-operation. Violent prevention and suppression of anti-social activities benefit the whole of society and each of its members. But violence and oppression are none the less evils and corrupt those in charge of their application. It is necessary to restrict the power of those in office lest they become absolute despots. Society cannot exist without an apparatus of violent coercion. But neither can it exist if the office holders are irresponsible tyrants free to inflict harm upon those they dislike.

Death is too exact; it has all the reasons on its side. Mysterious for our instincts, it takes shape, to our reflection, limpid, without glamor, and without the false lures of the unknown. By dint of accumulating non-mysteries and monopolizing non-meanings, life inspires more dread than death: it is life which is the Great Unknown.

Where any work can be done conformably to the reason which is common to gods and men, there we have nothing to fear; for where we are able to get profit by means of the activity which is successful and proceeds according to our constitution, there no harm is to be suspected.

The utilitarian doctrine is, that happiness is desirable, and the only thing desirable, as an end; all other things being only desirable as means to that end.

Thought is only a flash between two long nights, but this flash is everything.

You will hear every day the maxims of a low prudence. You will hear, that the first duty is to get land and money, place and name. "What is this Truth you seek? What is this Beauty?" men will ask, with derision. If, nevertheless, God have called any of you to explore truth and beauty, be bold, be firm, be true. When you shall say, "As others do, so will I. I renounce, I am sorry for it, my early visions; I must eat the good of the land, and let learning and romantic expectations go, until a more convenient season." - then dies the man in you; then once more perish the buds of art, and poetry, and science, as they have died already in a thousand thousand men. The hour of that choice is the crisis of your history; and see that you hold yourself fast by the intellect. ... Bend to the persuasion which is flowing to you from every object in Nature, to be its tongue to the heart of man, and to show the besotted world how passing fair is wisdom.

Indulge in no wrathfulness, for a man when he indulges in wrath becomes then forgetful of his duty and good works . . . and sin and crime of every kind occur unto his mind, and until the subsiding of the wrath he is said to be just like Ahareman.

Warmth, warmth, more warmth! for we are dying of cold and not of darkness. It is not the night that kills, but the frost.

Of all the schools of patience and lucidity, creation is the most effective. It is also the staggering evidence of man's sole dignity: the dogged revolt against his condition, perseverance in an effort considered sterile. It calls for a daily effort, self-mastery, a precise estimate of the limits of truth, measure, and strength. It constitutes an ascesis. All that "for nothing," in order to repeat and mark time. But perhaps the great work of art has less importance in itself than in the ordeal it demands of a man and the opportunity it provides him of overcoming his phantoms and approaching a little closer to his naked reality.

The obliteration of the evil hath been practised by two means, some kind of redemption or expiation of that which is past, and an inception or account de novo for the time to come. But this part seemeth sacred and religious, and justly; for all good moral philosophy (as was said) is but a handmaid to religion.

To preserve the life of citizens, is the greatest virtue in the father of his country.

It is the destiny of our race to become united into one great body, thoroughly connected in all its parts, and possessed of similar culture. Nature, and even the passions and vices of Man, have from the beginning tended towards this end. A great part of the way towards it is already passed, and we may surely calculate that it will in time be reached.

Life itself is but the shadow of death, and souls departed but the shadows of the living: All things fall under this name. The Sun itself is but the dark simulacrum, and the light but the shadow of God.

Patriotism is an ephemeral motive that scarcely ever outlasts the particular threat to society that aroused it.

The art of life is more like the wrestler's art than the dancer's, in respect of this, that it should stand ready and firm to meet onsets which are sudden and unexpected.

If one doesn't know his mistakes, he won't want to correct them.

Patriotism ruins history.

I say that where the public morality is concerned it may be the duty of the State to interfere with the contracts of individuals... It must then, I think, be admitted that, where health is concerned, and where morality is concerned, the State is justified in interfering with the contracts of individuals.

He once begged alms of a statue, and, when asked why he did so, replied, "To get practice in being refused."

The educated man is the man who does not live in immediate intuition, but in his recollection so that little is new to him any longer.

In the metaphysical elements of aesthetics the various nonmoral feelings are to be made use of; in the elements of moral metaphysics the various moral feelings of men, according to the differences in sex, age, education, and government, of races and climates, are to be employed.

We all observe that the reality of sexual intercourse is far from perfect; yet this does not convince us that sex is a greatly overrated occupation. Every time a man glimpses a pretty girl pulling up her stocking, he catches a glimpse of what might be called the "primal sexual vision." It is unfortunate that there seems to be a certain disparity between this primal vision and most ordinary sexual experience. But it dances in front of us like a will-o'-the-wisp, luring us into tormented effort. It can lead novelists to write novels, poets to write poems, and musicians to write symphonies.

Just you think first, and don't bother to speak afterward, either.

The chief function of the disciplinary power is to 'train', rather than to select and to levy; or, no doubt, to train in order to levy and select all the more. It does not link forces together in order to reduce them; it seeks to bind them together in such a way as to multiply and use them.

Never regard something as doing you good if it makes you betray a trust or lose your sense of shame or makes you show hatred, suspicion, ill-will or hypocrisy or a desire for things best done behind closed doors.

So long as you "have" yourself, have yourself as an object, your experience of man is only as of a thing among things.

Reason alone does not suffice.

After it hath been seen how the obstinate and the ignorant of evil disposition are accustomed to dispute, it will further be shewn how disputes are wont to conclude; although others are so wary that without losing their composure, but with a sneer, a smile, a certain discreet malice, that which they have not succeeded in proving by argument - nor indeed can it be understood by themselves - nevertheless by these tricks of courteous disdain they pretend to have proven, endeavouring not only to conceal their own patently obvious ignorance but to cast it on to the back of their adversary. For they dispute not in order to find or even to seek Truth, but for victory, and to appear the more learned and strenuous upholders of a contrary opinion. Such persons should be avoided by all who have not a good breastplate of patience.

The positivist philosophy of Comte and the I doctrine deduced from it that humanity is an organism, and Darwin's doctrine of a law of the struggle for existence that is supposed to govern life, with the differentiation of various breeds of people which follows from it, and the anthropology, biology, and sociology of which people are now so fond-all have the same aim. These have all become favourite sciences because they serve to justify the way in which people free themselves from the human obligation to labour, while consuming the fruits of other people's labour.

Wit is cultured insolence.

Another doctrine repugnant to Civill Society, is that whatsoever a man does against his Conscience, is Sinne; and it dependeth on the presumption of making himself judge of Good and Evill. For a man's Conscience and his Judgement are the same thing, and as the Judgement, so also the Conscience may be erroneous.

Like nonhuman animals in human factory farms, free-living nonhumans who are starving - or being disembowelled, asphyxiated or eaten alive - cannot console themselves by chanting the Four Noble Truths of Buddhism. The moral case for helping other sentient beings, regardless or race or species, does not rest on the distress their plight does (or doesn't) cause spectators.

I do like clarity and exact thinking and I believe that very important to mankind because when you allow yourself to think inexactly your prejudices, your bias, your self interest comes in in ways you don't notice and you do bad things without knowing that you are doing them: self deception is very easy. So that I do think clear thinking immensely important.

The most momentous thing in human life is the art of winning the soul to good or to evil.

If a given science accidentally reached its goal, this would by no means stop the workers in the field, who would be driven past their goal by the sheer momentum of the illusion of unlimited progress.