He that does good to another does good also to himself, not only in the consequence but in the very act. For the consciousness of well-doing is in itself ample reward.
A large library is apt to distract rather than to instruct the learner; it is much better to be confined to a few authors than to wander at random over many.
I have withdrawn not only from men, but from affairs, especially my own affairs; I am working for later generations, writing down some ideas that may be of assistance to them.
