“All life is problem-solving.”

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.

We all have an unscientific weakness for being always in the right, and this weakness seems to be particularly common among professional and amateur politicians.

History has no meaning.

I hold that he who teaches that not reason but love should rule opens up the way for those who rule by hate.

Great men may make great mistakes.

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

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

If we are not prepared to defend a tolerant society against the onslaught of the intolerant, then the tolerant will be destroyed, and tolerance with them.

The conspiracy theory of society, comes from abandoning God and then asking: “Who is in his place?”

It is complete nihilism to propose laying down arms in a world where atom bombs are around. It is very simple: there is no way of achieving peace other than with weapons.

The future depends on ourselves, and we do not depend on any historical necessity.