The twenty-first century will be spiritual or it will not be.

The first duty of a leader is to make himself be loved without courting love. To be loved without 'playing up' to anyone - even to himself.

An art book is a museum without walls.

Some pictures are in the gallery because they belong to humanity and others because they belong to the United States.

Always, however brutal an age may actually have been, its style transmits its music only.

The world of art is not a world of immortality but of metamorphosis.

The twenty-first century will be spiritual or it will not be.