The main thing needed to make men happy is intelligence.
This illustrates an important truth, namely, that the worse your logic, the more interesting the consequences to which it gives rise.
Men who are unhappy, like men who sleep badly, are always proud of the fact.
The fact that an opinion has been widely held is no evidence whatever that it is not utterly absurd.
To fear love is to fear life.
Next to enjoying ourselves, the next greatest pleasure consists in preventing others from enjoying themselves, or, more generally, in the acquisition of power.