The reason why so few good books are written is that so few people who can write know anything.
It is good to be without vices, but it is not good to be without temptations.
The habit of common and continuous speech is a symptom of mental deficiency.
The greatest pleasure in life is doing what people say you cannot do.
The greatest mistake is trying to be more agreeable than you can be.
The whole history of civilization is strewn with creeds and institutions which were invaluable at first, and deadly afterwards.
One of the greatest pains to human nature is the pain of a new idea.
God makes three requests of his children: Do the best you can, where you are, with what you have, now