Happiness is an imaginary condition, formerly attributed by the living to the dead, now usually attributed by adults to children, and by children to adults.

If there are no stupid questions, then what kind of questions do stupid people ask? Do they get smart just in time to ask questions?

It is a mistake to think you can solve any major problems just with potatoes.

Humans are not proud of their ancestors, and rarely invite them round to dinner.

It is best to do things systematically, since we are only human, and disorder is our worst enemy.

By keenly confronting the enigmas that surround us, and by considering and analysing the observations that I have made, I ended up in the domain of mathematics, Although I am absolutely without training in the exact sciences, I often seem to have more in common with mathematicians than with my fellow artists.

What I give form to in daylight is only one per cent of what I have seen in darkness.

Not only is the universe stranger than we imagine, it is stranger than we can imagine.

It has always been the prerogative of children and half-wits to point out that the emperor has no clothes. But the half-wit remains a half-wit, and the emperor remains an emperor.

This is one of those views which are so absolutely absurd that only very learned men could possibly adopt them.