“Our knowledge can only be finite, while our ignorance must necessarily be infinite.”

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.

The aim of argument, or of discussion, should not be victory but progress.

If you can’t say it simply and clearly, keep quiet, and keep working on it till you can.

“We don’t know anything” and believed that this was the most important philosophical truth.

While differing widely in the various little bits we know, in our infinite ignorance we are all equal.

We can all participate in the heritage of man. We all can help to preserve it. And we can all make our own modest contribution to it.

Many a spoken word is more piercing than an attack.

Understanding our past is a crucial part of understanding the injustices and inequalities of our present and remaking our future as a nation.

The worst of our faults is our interest in other people’s faults.

Humans have both the urge to create and destroy.

The tongue never slips – remember this always. What goes on within the mind comes invariably on the tongue.

When you are failing, you are forced to be creative, to dig deep and think, night and day.

Nothing is so aggravating as calmness.

A lie travels round the world while truth is putting her boots on.