The world is the best of all possible worlds, and everything in it is a necessary evil.
Eclecticism. Every truth is so true that any truth must be false.
The deadliest foe to virtue would be complete self-knowledge.
Reason teaches us that what is good is good for something, and that what is good for nothing is not good at all.
Few people would not be the worse for complete sincerity.
It is good to know what a man is, and also what the world takes him for. But you do not understand him until you have learnt how he understands himself.