The history of science is everywhere speculative. It is a marvelous hiatory. It makes you proud to be a human being.

True ignorance is not the absence of knowledge, but the refusal to acquire it.

The growth of knowledge depends entirely upon disagreement.

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.

The question is not how to get good people to rule; THE QUESTION IS: HOW TO STOP THE POWERFUL from doing as much damage as they can to us.

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

The best thing that can happen to a human being us to find a problem, to fall in love with that problem, and to live trying to solve that problem, unless another problem even more lovable appears.

Ignorance is not a simple lack of knowledge but an active aversion to knowledge, the refusal to know, issuing from cowardice, pride, or laziness of mind.

A theory which is not refutable by any conceivable event is non-scientific. Irrefutability is not a virtue of a theory (as people often think) but a vice.

I may be wrong and you may be right, and by an effort, we may get nearer to the truth

The attempt to make heaven on earth invariably produces hell.

All writers should be put in a box and thrown in the sea.

Rien ne sert de courir il faut partir à point

The best way to create a better future is to do your best at this very moment.

Love is the most likable, invisible fashion of life that you can wear with passion.

You don't get to know anybody in a movie until after it's over. You work less together in a film than you do onstage.

Reading Proust is like bathing in someone else's dirty water.

There is never a lack of subject matter; just absence of creativity.

A lot of time, people don't do great things becoz' great things really aren't expected of them.

You have to keep banging away at something until you get it to work. I think women are maybe better at that.