You have to learn it all, then forget it and start again like a child. This is the inner evolution.

The duty of the artist is not to be calculating in any sense, so that he may be free himself of human emotions while carried by the universal forces of life. Only then does one not think about making art, or about styles, or directions. Something comes about, something happens.

Through play, we renew contact with childhood – My art is childlike.

When I was young I once found a book in a Dutch translation, 'The leaves of Grass'. It was the first time a book touched me by its feeling of freedom and open spaces, the way the poet spoke of the ocean by describing a drop of water in his hand. Walt Whitman was offering the world an open hand (now we call it democracy) and my 'Monument for Walt Whitman' became this open hand with mirrors, so you can see inside yourself.

If I paint like a barbarian, it's because we live in a barbarous age

I'm not a pessimist. Maybe I don't have a primitive feeling of happiness, that is true. Sometimes my color is happy but not the expression.

I don't paint, I hit.