“The agitator seizes the world. The artist is seized by it”

“How can one take delight in the world unless one flees to it for refuge?”

“There is nothing stable in the world; uproar's your only music”

“A man should have the fine point of his soul taken off to become fit for this world”

“Are there not thousands in the world who love their fellows even to the death, who feel the giant agony of the world, and more, like slaves to poor humanity, labor for mortal good?”

“In everything that relates to science, I am a whole Encyclopaedia behind the rest of the world.”