“What we need and what we want is to moralize politics, not to politicize morals.”

In my view, aiming at simplicity and lucidity is a moral duty of all intellectuals: lack of clarity is a sin, and pretentiousness is a crime.

He who decides one day that scientific statements do not call for any further test and that they can be regarded as finally verified retires from the game.

The way of science is paved with discarded theories that were once declared self-evident.

The method of learning by trial and error – of learning from our mistakes – seems to be fundamentally the same whether it is practiced by lower or by higher animals, by chimpanzees, or by men of science.

In philosophy methods are unimportant; any method is legitimate if it leads to results capable of being rationally discussed.

In so far as a scientific statement speaks about reality, it must be falsifiable: and in so far as it is not falsifiable, it does not speak about reality.

Theology, I still think, is due to a lack of faith.

Science may be described as the art of systematic oversimplification.

The game of science is, in principle, without end.

The essential feature of dualist-interactionism is that the mind and brain are independent entities and that they interact by quantum physics.

“It can’t happen here” is always wrong: a dictatorship can happen anywhere.

A theory that explains everything, explains nothing.

If our civilization is to survive, we must break with the habit of deference to great men.

The simple truth is that truth is hard to come by, and that once found may easily be lost again.

The quest for precision is analogous to the quest for certainty, and both should be abandoned.

Every intellectual has a very special responsibility. He has the privilege and the opportunity of studying.

And every day I thank [God] that I am alive, not because I fear death, but because my wife has a husband and my son is not an orphan.

Adult life is dealing with an enormous amount of questions that don’t have answers.

Justice is the soul of the universe.

There is no knowing that does not begin with knowing God.

People get very trapped where they are. When they hear “fashion” they get intimidated, particularly at the upper end because it’s so elitist. If you can bring your own concept or your viewpoint and translate it not down but out, then you’re really successful in the truest sense.

There’s no right. There’s no wrong. There’s only popular opinion.

Chaos breeds geniuses. It offers a man something to be a genius about.

They say, Find a purpose in your life and live it. But, sometimes, it is only after you have lived that you recognize your life had a purpose, and likely one you never had in mind.