Henri Poincare

To doubt everything, or, to believe everything, are two equally convenient solutions; both dispense with the necessity of reflection.

Mathematics is the art of giving the same name to different things.

Ideas rose in clouds; I felt them collide until pairs interlocked, so to speak, making a stable combination.

I'm interested in the psychological exploration of human nature, and it just happens to come in the form of film-making.

Recently, I was in Bernalda, my dad's ancestral home town in Italy. He has just refurbished a palazzo and turned it into a hotel, so we had my sister's wedding there. It was beautiful.

You teach your daughters the diameters of the planets and wonder when you are done that they do not delight in your company.