"Few things tend more to alienate friendship than a want of punctuality in our engagements. I have known the breach of a promise to dine or sup to break up more than one intimacy."
"The path of genius is free, and its own"
"Life is the art of being well deceived; and in order that the deception may succeed it must be habitual and uninterrupted."
"There are no rules for friendship. It must be left to itself. We cannot force it any more than love."
"Do not keep on with a mockery of friendship after the substance is gone - but part, while you can part friends. Bury the carcass of friendship: it is not worth embalming."
"Cunning is the art of concealing our own defects, and discovering other people's weaknesses."