What is all our knowledge worth? We do not even know what the weather will be tomorrow.

When the foot of the' mountain is enveloped in mist, the mountain appears to us much loftier than it is; so also when the ground and basis of a disaster is not clear to us.

To harbor hatred and animosity in the soul makes one irritable, gloomy, and prematurely old.

Being alone when one's belief is firm, is not to be alone.

Discontent is the source of all trouble,but also of all progress, in individuals and nations.

All men are selfish, but the vain man is in love with himself. He admires, like the lover his adored one, everything which to others is indifferent.

Of all afflictions, the worst is self contempt.