“Better mad with the rest of the world than wise alone. ”

“But what is happiness except the simple harmony between a man and the life he leads? ”

“All who joy would win must share it. Happiness was born a twin ”

“The most I can do for my friend is simply be his friend. ”

“I don't need a friend who changes when I change and who nods when I nod; my shadow does that much better”

“Sympathy constitutes friendship; but in love there is a sort of antipathy, or opposing passion. Each strives to be the other, and both together make up one whole”