We set the treatment of bodies so high above the treatment of souls, that the physician occupies a higher place in society than the school-master. The governess is to have every one of God's gifts; she is to do that which the mother herself is incapable of doing; but our son must not degrade himself by marrying the governess, nor our daughter the tutor, though she might marry the medical man.

Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves.

Ah! Do not judge the gods, young man, they have painful secrets.

I observe, that of late Chymistry begins, as indeed it deserves, to be cultivated by Learned Men who before despis'd it; and to be pretended to by many who never cultivated it, that they may be thought not to ignore it: Whence it is come to passe, that divers Chymical Notions about Matters Philosophical are taken for granted and employ'd, and so adopted by very eminent Writers both Naturalists and Physitians. Now this I fear may prove somewhat prejudicial to the Advancement of solid Philosophy: For though I am a great Lover of Chymical Experiments, and though I have no mean esteem of divers Chymical Remedies, yet I distinguish these from their Notions about the causes of things, and their manner of Generation.

In framing scientific terms, the appropriation of old words is preferable to the invention of new ones.

Every body is in place; but nothing essentially incorporeal, or any thing of this kind, has any locality.

Several actual worlds without one another are not, therefore, impossible by the very concept, as Wolf hastily concluded from the notion of a complex or multiplicity which he deemed sufficient to a whole, as such, but only on condition that there exist but one necessary cause of all things. If several are admitted, several worlds without one another will be possible in the strictest metaphysical sense.

It is vain to expect virtue from women till they are in some degree independent of men; nay, it is vain to expect that strength of natural affection which would make them good wives and mothers. Whilst they are absolutely dependent on their husbands they will be cunning, mean, and selfish.

We can know only one thing about God - that he is what we are not. Our wretchedness alone is an image of this. The more we contemplate it, the more we contemplate him.

To become properly acquainted with a truth, we must first have disbelieved it, and disputed against it.

Democracy can hardly be expected to flourish in societies where political and economic power is being progressively concentrated and centralized. But the progress of technology has led and is still leading to just such a concentration and centralization of power.

The external embodiment of an act is composed of many parts, and may be regarded as capable of being divided into an infinite number of particulars. An act may be looked on as in the first instance coming into contact with only one of these particulars. But the truth of the particular is the universal. A definite act is not confined in its content to one isolated point of the varied external world, but is universal, including these varied relations within itself. The purpose, which is the product of thought and embraces not the particular only but also the universal side, is intention.

There are some mixt bodies, from which it has not been yet made appear, that any degree of fire can separate either salt, or sulphur, or mercury, much less all the three. The most obvious instance of this truth is gold, which is a body so fixed, and wherein the elementary ingredients (if it have any) are so firmly united to each other, that we find not in the operations, wherein gold is exposed to the fire, how violent soever, that it does discernably so much as lose of its fixedness or weight, so far is it from being dissipated into those principles, whereof one at least is acknowledged to be fugitive enough.

It is always better to have no ideas than false ones; to believe nothing, than to believe what is wrong.

The offender never forgives.

Pray, O pray to God, dear friends, if you are not already asses - that he will cause you to become asses... There is none who praiseth not the golden age when men were asses: they knew not how to work the land. One knew not how to dominate another, one understood no more than another; caves and caverns were their refuge; they were not so well covered nor so jealous nor were they confections of lust and of greed. Everything was held in common.

Another force driving progressive evolution is the so-called "arms-race." Prey animals evolve faster running speeds because predators do. Consequently predators have to evolve even faster running speeds, and so on, in an escalating spiral. Such arms races probably account for the spectacularly advanced engineering of eyes, ears, brains, bat "radar" and all the other high-tech weaponry that animals display.

All the thoughts of a turtle are turtle.

Your god is too small.

Books must follow sciences, and not sciences books.

Genius, in truth, means little more than the faculty of perceiving in an unhabitual way.

Revolutions never go backwards.

We are born helpless. As soon as we are fully conscious we discover loneliness. We need others physically, emotionally, intellectually; we need them if we are to know anything, even ourselves. 

The superior man, while there is anything he has not studied, or while in what he has studied there is anything he cannot understand, Will not intermit his labor. While there is anything he has not inquired about, or anything in what he has inquired about which he does not know, he will not intermit his labor. While there is anything which he has not reflected on, or anything in what he has reflected on which he does not apprehend, he will not intermit his labor. While there is anything which he has not discriminated or his discrimination is not clear, he will not intermit his labor. If there be anything which he has not practiced, or his practice fails in earnestness, he will not intermit his labor. If another man succeed by one effort, he will use a hundred efforts. If another man succeed by ten efforts, he will use a thousand. Let a man proceed in this way, and, though dull, he will surely become intelligent; though weak, he will surely become strong.

Truth is sought not because it is truth but because it is good.

The two ways of contemplation are not unlike the two ways of action commonly spoken of by the ancients: the one plain and smooth in the beginning, and in the end impassable; the other rough and troublesome in the entrance, but after a while fair and even. So it is in contemplation: If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts he shall end in certainties.

The smartphone seems to be a playground, but it is a digital panopticon.

No nobler feeling than this of admiration for one higher than himself dwells in the breast of man. It is to this hour, and at all hours, the vivifying influence in man's life.

All happiness or unhappiness solely depends upon the quality of the object to which we are attached by love.

To disrespect the masses is moral; to honor them, lawful.

The conception of the necessary unit of all that is resolves itself into the poverty of the imagination, and a freer logic emancipates us from the straitwaistcoated benevolent institution which idealism palms off as the totality of being.

Everyone is sure of this [that errors are normally distributed], Mr. Lippman told me one day, since the experimentalists believe that it is a mathematical theorem, and the mathematicians that it is an experimentally determined fact.

One can only become a philosopher, but not be one. As one believes he is a philosopher, he stops being one.

We swallow greedily any lie that flatters us, but we sip only little by little at a truth we find bitter.

Show me that the good in life does not depend upon life's length, but upon the use we make of it; also, that it is possible, or rather usual, for a man who has lived long to have lived too little. Say to me when I lie down to sleep: "You may not wake again!" And when I have waked: "You may not go to sleep again!" Say to me when I go forth from my house: "You may not return!" And when I return: "You may never go forth again!"

Nothing has such power to broaden the mind as the ability to investigate systematically and truly all that comes under thy observation in life.

It is the first step in sociological wisdom, to recognize that the major advances in civilization are processes which all but wreck the societies in which they occur:-like unto an arrow in the hand of a child. The art of free society consists first in the maintenance of the symbolic code; and secondly in fearlessness of revision, to secure that the code serves those purposes which satisfy an enlightened reason. Those societies which cannot combine reverence to their symbols with freedom of revision, must ultimately decay either from anarchy, or from the slow atrophy of a life stifled by useless shadows.

The belief in a political Utopia is especially dangerous. This is possibly connected with the fact that the search for a better world, like the investigation of our environment, is (if I am correct) one of the oldest and most important of all the instincts.

Rats and roaches live by competition under the laws of supply and demand; it is the privilege of human beings to live under the laws of justice and mercy.

The religious world is but the reflex of the real world.

I believe in the salvation of humanity, in the future of cyanide . . .

To none is life given in freehold; to all on lease.

He who disdained not to assume us unto Himself, did not disdain to take our place and speak our words, in order that we might speak His words.

The history of the world is but the biography of great men.

He used to reason as follows: 'Everything belongs to the gods; the wise are friends of the gods; friends hold all things in common; ergo, everything belongs to the wise.'

We carry with us the wonders, we seek without us: There is all Africa, and her prodigies in us; we are that bold and adventurous piece of nature, which he that studies, wisely learns in a compendium, what others labour at in a divided piece and endless volume.