Tolerance consists of seeing certain things with your heart instead of with your eyes.
The heart perceives that which the eye cannot see.
That discipline which corrects the eagerness of worldly passions, which fortifies the heart with virtuous principles, which enlightens the mind with useful knowledge, and furnishes to it matter of enjoyment from within itself, is of more consequence to real felicity than all the provisions which we can make of the goods of fortune.
Graceful, particularly in youth, is the tear of sympathy, and the heart that melts at the tale of woe; we should not permit ease and indulgence to contract our affections, and wrap us up in selfish enjoyment. But we should accustom ourselves to think of the distresses of human life, of the solitary cottage, the dying parent, and the weeping orphan. Nor ought we ever to sport with pain and distress in any of our amusements, or treat even the meanest insect with wanton cruelty.
The person who tries to live alone will not succeed as a human being. His heart withers if it does not answer another heart. His mind shrinks away if he hears only the echoes of his own thoughts and finds no other inspiration.