Science is what you know, philosophy is what you don’t know.

Those who forget good and evil and seek only to know the facts are more likely to achieve good than those who view the world through the distorting medium of their own desires.

Hatreds not vowed and concealed are to be feared more than those openly declared.

I have finally decided to write my book on the spiritual life. I mean to put down as simply as possible the sort of ascetical or mystical teaching that I have been living and preaching so long. I call it ‚Le Milieu Divin,‘ but I am being careful to include nothing esoteric and the minimum of explicit philosophy.

Orthodoxy is the diehard of the world of thought. It learns not, neither can it forget.

The arrogance of age must submit to be taught by youth.

Travel, in the younger sort, is a part of education; in the elder, a part of experience.

Time is an illusion. Lunchtime doubly so.

If a man loses his reverence for any part of life, he will lose his reverence for all of life.

It is the nature of every person to error, but only the fool perseveres in error.

If anyone offers conjectures about the truth of things from the mere possibility of hypotheses, I do not see by what stipulation anything certain can be determined in any science, since one or another set of hypotheses may always be devised which will appear to supply new difficulties.

Never pick a fight with people who buy ink by the barrel.

Not only is there but one way of doing things rightly, but there is only one way of seeing them, and that is, seeing the whole of them.

It is a profound and necessary truth that the deep things in science are not found because they are useful; they were found because it was possible to find them.

The lie is a condition of life.

It is more fitting for a man to laugh at life than to lament over it.

If you read enough biography and history, you learn how people have dealt successfully or unsuccessfully with similar situations or patterns in the past. It doesn’t give you a template of answers, but it does help you refine the questions you have to ask yourself.

His priority did not seem to be to teach them what he knew, but rather to impress upon them that nothing, not even… knowledge, was foolproof.

It appears to be a law that you cannot have a deep sympathy with both man and nature.

My company survives because I’ve learned to respect the ideas of people younger than me and recognize when my wisdom is obsolete.

There is a specter haunting Europe, the specter of Communism.

Knowledge rests not upon truth alone, but upon error also.

From a purely positivist point of view, man is the most mysterious and disconcerting of all the objects met with by science.

Nobody can give you wiser advice than yourself.

Why are we here? Where do we come from? Traditionally, these are questions for philosophy, but philosophy is dead.

I am a nuclear physicist by training and a deeply committed Christian. I don’t have any doubt in my own mind about God who created the entire universe. But I don’t adhere to passages that so and so was created 4,000 years before Christ, and things of that kind.

‚Pure experience‘ is the name I gave to the immediate flux of life which furnishes the material to our later reflection with its conceptual categories.

The more that you read, the more things you will know. The more that you learn, the more places you’ll go.

Truth is a pathless land.

Knowledge slowly builds up what Ignorance in an hour pulls down.

All difficult things have their origin in that which is easy, and great things in that which is small.

One of the most important things you learn from the Internet is that there is no ‚them‘ out there. It’s just an awful lot of ‚us.‘

The love of economy is the root of all virtue.

Our nature consists in motion; complete rest is death.

I believe Karl Marx could have subscribed to the Sermon on the Mount.

Poverty must not be a bar to learning and learning must offer an escape from poverty.

Even a mistake may turn out to be the one thing necessary to a worthwhile achievement.

We must learn to live together as brothers or perish together as fools.

I always knew from that moment, from the time I found myself at home in that little segregated library in the South, all the way up until I walked up the steps of the New York City library, I always felt, in any town, if I can get to a library, I’ll be OK. It really helped me as a child, and that never left me.

It seems the older you get, the more life comes into focus.

We as women, we have to understand that we know more, just even instinctively, than we think we do.

The fundament upon which all our knowledge and learning rests is the inexplicable.

I have nothing new to teach the world. Truth and Non-violence are as old as the hills. All I have done is to try experiments in both on as vast a scale as I could.

The biggest guru-mantra is: never share your secrets with anybody. It will destroy you.

Showing off is the fool’s idea of glory.

Words are only painted fire; a look is the fire itself.

I call upon the scientific community in our country, those who gave us nuclear weapons, to turn their great talents now to the cause of mankind and world peace: to give us the means of rendering these nuclear weapons impotent and obsolete.

When a man fell into his anecdotage it was a sign for him to retire from the world.

The direction in which education starts a man will determine his future in life.

Good fame is like fire; when you have kindled you may easily preserve it; but if you extinguish it, you will not easily kindle it again.

The only difference between the saint and the sinner is that every saint has a past, and every sinner has a future.

Man is not a machine that can be remodelled for quite other purposes as occasion demands, in the hope that it will go on functioning as regularly as before but in a quite different way. He carries his whole history with him; in his very structure is written the history of mankind.

The moral arc of the universe bends at the elbow of justice.

Puritanism. The haunting fear that someone, somewhere, may be happy.

Society exists only as a mental concept; in the real world there are only individuals.

Life is warfare.

The first step in the evolution of ethics is a sense of solidarity with other human beings.

Honor thy error as a hidden intention.

One who does not know when to die, does not know how to live.

To have no time for philosophy is to be a true philosopher.

Let us work without theorizing, tis the only way to make life endurable.