Every positive value has its price in negative terms... the genius of Einstein leads to Hiroshima.

Success is dangerous. One begins to copy oneself, and to copy oneself is more dangerous than to copy others. It leads to sterility.

Every act of creation is first an act of destruction.

Every child is an artist. The problem is how to remain an artist once we grow up.

So much the better. The higher the price you have to pay, the more you will cherish it.

Value is more expensive than price.