Books are the training weights of the mind.

Each man's life is a kind of campaign, and a long and complicated one at that. You have to maintain the character of a soldier, and do each separate act at the bidding of the General.

Other people's views and troubles can be contagious. Don't sabotage yourself by unwittingly adopting negative, unproductive attitudes through your associations with others.

One that desires to excel should endeavor in those things that are in themselves most excellent.

We are not to give credit to the many, who say that none ought to be educated but the free; but rather to the philosophers, who say that the well-educated alone are free.

No living being is held by anything so strongly as its own needs.

No one who is in a state of fear or sorrow or tension is free, but whosoever is delivered from sorrows or fears or anxieties is at the same time delivered from servitude.