When intelligent and sensible people despise knowledge in their old age, it is only because they have asked too much of it and of themselves.

You must be either the servant or the master, the hammer or the anvil.

There is nothing insignificant in the world. It all depends on how one looks at it.

A great artist... must be shaken by the naked truths that will not be comforted. This divine discontent, this disequilibrium, this state of inner tension is the source of artistic energy.

Unrest and uncertainty are our lot.

Collectors are happy people.

We gladly put antiquity above our age but not posterity. Only a father doesn't begrudge his son's talent.