"You have killed my love. You used to stir my imagination. Now you don't even stir my curiosity. You simply produce no effect. I loved you because you were marvelous, because you had genius and intellect, because you realized the dreams of great poets and gave shape and substance to the shadows of art. You have thrown it all away. You are shallow and stupid"
"The books that the world calls immoral are books that show the world its own shame."
"But we never get back our youth… The pulse of joy that beats in us at twenty becomes sluggish. Our limbs fail, our senses rot. We degenerate into hideous puppets, haunted by the memory of the passions of which we were too much afraid, and the exquisite temptations that we had not the courage to yield to."
"The reason we all like to think so well of others is that we are all afraid for ourselves. The basis of optimism is sheer terror."
"I am too fond of reading books to care to write them."
"There is no such thing as a good influence. Because to influence a person is to give him one's own soul. He does not think his natural thoughts, or burn with his natural passions. His virtures are not real to him. His sins, if there are such thing as sins, are borrowed. He becomes an echo of someone else's music, an actor of a part that has not been written for him."