In order to remain true to oneself one ought to renounce one's party three times a day.
The least one can say of power is that a vocation for it is suspicious.
In politics, yesterday's lie is attacked only to flatter today's.
Take heed of critics even when they are not fair; resist them even when they are.
One must credit an hypothesis with all that has had to be discovered in order to demolish it.
The books one has written in the past have two surprises in store: one couldn't write them again, and wouldn't want to.