The labor of rising from the ground will be great, ... but as we mount higher, the earth's attraction, and the body's gravity, will be gradually diminished till we arrive at a region where the man will float in the air without any tendency to fall.

Human experience, which is constantly contradicting theory, is the great test of truth. A system, built upon the discoveries of a great many minds, is always of more strength, than what is produced by the mere workings of any one mind, which, of itself, can do very little. There is not so poor a book in the world that would not be a prodigious effort were it wrought out entirely by a single mind, without the aid of prior investigators.

The true measure of a man is how he treats someone who can do him absolutely no good.

The luster of diamonds is invigorated by the interposition of darker bodies; the lights of a picture are created by the shades; the highest pleasure which nature has indulged to sensitive perception is that of rest after fatigue.

Revenge is an act of passion; vengeance of justice. Injuries are revenged; crimes are avenged.

One of the aged greatest miseries is that they cannot easily find a companion able to share the memories of the past.

Advice is offensive, not because it lays us open to unexpected regret, or convicts us of any fault which had escaped our notice, but because it shows us that we are known to others as well as to ourselves; and the officious monitor is persecuted with hatred, not because his accusation is false, but because he assumes that superiority which we are not willing to grant him, and has dared to detect what we desired to conceal.