I'm very aware of what you're talking about as I was involved with the radio in Africa in the same period as I was doing Concrete - I was doing both at the same time.

I do not want to heap coals of fire on anyone's head, but I would like to advise those who keep the living thought of the dead hidden away in cardboard boxes, to pass on as quickly as possibly such explosive material, whose only legitimate heir is the whole world, that is to say, my neighbor.

The world changes materially. Science makes advances in technology and understanding. But the world of humanity doesn't change.

Has it struck you that the music which is regarded as the most sublime in western civilization, which is the music of Bach, is called baroque?

The moment at which music reveals its true nature is contained in the ancient exercise of the theme with variations. The complete mystery of music is explained right there.

Something new has been added, a new art of sound. Am I wrong in calling it music?

Sound is the vocabulary of nature.

People who try to create a musical revolution do not have a chance, but those who turn their back to music can sometimes find it.

Noises have generally been thought of as indistinct, but this is not true.

Barbarians always think of themselves as the bringers of civilization.

I was horrified by modern 12-tone music. I said to myself, 'Maybe I can find something different... maybe salvation, liberation, is possible.

It's ridiculous that time and time again we need a radioactive cloud coming out of a nuclear power-station to remind us that atomic energy is extraordinarily dangerous.

First, it doesn't surprise me that traditional music has experienced a kind of exhaustion in the 20th century - not forgetting that many musicians started to look outside the traditional structures of tonality.