I speak as a biologist. There aren't many absolutely clear distinctions in biology. Mostly what we have is a spectrum. But the male-female divide is exceptional in biology. It really is a true binary.

For we are social beings, who can exist and behave as autonomous agents only because we are supported in our ventures by that feeling of primal safety that the bond of society brings. We can envisage no project and no satisfaction on which the eyes of others do not shine. We are joined to those others, and even when they are strangers to us, they are also part of us. It is the indispensable need for membership that brings the national idea to our minds; and there is no rational argument that will expel it, once it is there. Without it, we are homeless; and even if our attitude to home is one of sour disaffection, home is no less necessary to our sense of who we are.

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.

I warmly second the advice of the wisest of men-"Don't be ambitious; don't be at all too desirous to success; be loyal and modest." Cut down the proud towering thoughts that you get into you, or see they be pure as well as high. There is a nobler ambition than the gaining of all California would be, or the getting of all the suffrages that are on the planet just now.

The pornographic body lacks any symbolism. The ritualized body, by contrast, is a splendid stage, with secrets and deities written into it.

To have a great man for an intimate friend seems pleasant to those who have never tried it; those who have, fear it.

It is the dissimilarities and inequalities among men which give rise to the notion of honor; as such differences become less, it grows feeble; and when they disappear, it will vanish too.

In Kant's words, human beings are uncaused causes, and therefore have infinite value, and a liberal regime protects that autonomy by giving people rights... The right to speak, to organize, to associate, and ultimately to have a share of power by being able to vote. ...This is ...the moral status, the dignity that life in a liberal regime that does respect individual rights, gives us, and it is one of the reasons that to this day, people do not want to live in authoritarian countries that do not recognize the fundamental dignity of their... citizens.

If all else fails, the character of a man can be recognized by nothing so surely as by a jest which he takes badly. 

The determination to print them (his lectures), and to communicate them to the General Public, must also speak for itself; and should it not do so, any other recommendation of them would be thrown away. Thus, with respect to the appearance of this work, I have nothing further to say to the Public, than that I have nothing to say.

Everywhere the human soul stands between a hemisphere of light and another of darkness on the confines of two everlasting hostile empires, - Necessity and Free Will.

I never turned recreant to intellectual culture, or ceased to consider the power and practice of analysis as an essential condition both of individual and of social improvement. But I thought that it had consequences which required to be corrected, by joining other kinds of cultivation with it. The maintenance of a due balance among the faculties, now seemed to me of primary importance. The cultivation of the feelings became one of the cardinal points in my ethical and philosophical creed.

The aim of research is the discovery of the equations which subsist between the elements of phenomena.

A terrible thing is intelligence. It tends to death as memory tends to stability. The living, the absolutely unstable, the absolutely individual, is strictly unintelligible. Logic tends to reduce everything to identities and genera, to each representation having no more than one self-same content in whatever place, time or relation it may occur to us. And there is nothing that remains for two successive moments of its existence. My idea of God is different each time that I conceive it. Identity, which is death, is the goal of the intellect. The mind seeks what is dead, for what is living escapes it; it seeks to congeal the flowing stream in blocks of ice; it seeks to arrest it. In order to analyze a body it is necessary to extenuate or destroy it. In order to understand anything it is necessary to kill it, to lay it out rigid in the mind.

You want to know whether I can make a long speech, such as you are in the habit of hearing; but that is not my way. Socrates speaking to Alcibiades

He who remembers the evils he has undergone, and those that have threatened him, and the slight causes that have changed him from one state to another, prepares himself in that way for future changes and for recognizing his condition. The life of Caesar has no more to show us than our own; an emperor's or an ordinary man's, it is still a life subject to all human accidents.

If not reason, then the devil.

Eloquence may strike the ear, but the language of poverty strikes the heart; the first may charm like music, but the second alarms like a knell. 

The uttered part of a man's life, let us always repeat, bears to the unuttered, unconscious part a small unknown proportion. He himself never knows it, much less do others.

Revolution is like Saturn, it devours its own children.

I once received a letter from an eminent logician, Mrs. Christine Ladd Franklin, saying that she was a solipsist, and was surprised that there were no others. Coming from a logician, this surprise surprised me.

No one ever told me that grief felt so like fear. First line.

It is a royal privilege to do good and be ill spoken of.

Of all Discourse, governed by desire of Knowledge, there is at last an End, either by attaining, or by giving over.

Practice no sloth, so that the duty and good work, which it is necessary for thee to do, may not remain undone.

The object of preaching is, constantly to remind mankind of what mankind are constantly forgetting; not to supply the defects of human intelligence, but to fortify the feebleness of human resolutions.

Bad times, hard times, this is what people keep saying; but let us live well, and times shall be good. We are the times: Such as we are, such are the times.

When memory begins to decay, proper names are what go first ...[C]ommon qualities and names have contracted an infinitely greater number of associations ...than the names of most of the persons ...Their memory is better organized. ...'Organization' means numerous associations; and the more numerous the associations, the greater the number of paths of recall. For the same reason... words... which form the grammatical framework of all our speech, are the very last to decay.

If you would be a good reader, read; if a writer, write.

Every sensible man, every honorable man, must hold the Christian sect in horror.

Avoid doing what you would blame others for doing.

The force of mind is only as great as its expression; its depth only as deep as its power to expand and lose itself.

Feeling which has not yet emerged into immediate consciousness is already affectible and already affected. In fact, this is habit, by virtue of which an idea is brought up into the present consciousness by a bond that has already been established between it and another idea while it was still in futuro.

Apart from any other basis which might justify a superiority, education, as a power, raised him who possessed it over the weak, who lacked it, and the educated man counted in his circle, however large or small it was, as the mighty, the powerful, the imposing one: for he was an authority.

The only government that I recognize-and it matters not how few are at the head of it, or how small its army - is that power that establishes justice in the land, never that which establishes injustice.

Every man is his own doctor of divinity, in the last resort.

There is nothing more visible than what is secret, and nothing more manifest than what is minute. Therefore the superior man is watchful over himself, when he is alone.

Preference of vice to virtue, a manifest wrong judgment.

World-view is a product of life-view, not vice versa.

Not only does the action of Governments not deter men from crimes; on the contrary, it increases crime by always disturbing and lowering the moral standard of society. Nor can this be otherwise, since always and everywhere a Government, by its very nature, must put in the place of the highest, eternal, religious law (not written in books but in the hearts of men, and binding on every one) its own unjust, man-made laws, the object of which is neither justice nor the common good of all but various considerations of home and foreign expediency.

"And yet, it was not, not now, she that really counted. Or if she counted (and, oh, gloriously she did) it was for another's sake. The earth and stars and sun, all that was or will be, existed for his sake. And he was coming. The most dreadful, the most beautiful, the only dread and beauty there is, was coming. The pillars on the far side of the pool flushed with his approach. I cast down my eyes."

There is simply too much to think about. It is hopeless - too many kinds of special preparation are required. In electronics, in economics, in social analysis, in history, in psychology, in international politics, most of us are, given the oceanic proliferating complexity of things, paralyzed by the very suggestion that we assume responsibility for so much. This is what makes packaged opinion so attractive.

Not content with real sufferings, the anxious man imposes imaginary ones on himself; he is a being for whom unreality exists, must exist; otherwise where would he obtain the ration of torment his nature demands?

History is a bath of blood.

And truly... if men could be persuaded to mind more the advancement of natural philosophy than that of their own reputations, it were not, methinks, very uneasy to make them sensible, that one of the considerablest services, that they could do mankind, were to set themselves diligently and industriously to make experiments and collect observations, without being over-forward to establish principles and axioms, believing it uneasy to erect such theories, as are capable to explicate all the phænomena of nature, before they have been able to take notice of the tenth part of those phænomena, that are to be explicated.

When a man is in a fair way and sees all life open in front of him, he seems to himself to make a very important figure in the world. His horse whinnies to him; the trumpets blow and the girls look out of window as he rides into town before his company; he receives many assurances of trust and regard--sometimes by express in a letter--sometimes face to face, with persons of great consequence falling on his neck. It is not wonderful if his head is turned for a time. But once he is dead, were he as brave as Hercules or as wise as Solomon, he is soon forgotten.