The art of life is to know how to enjoy a little and to endure very much.

Even in the common affairs of life, in love, friendship, and marriage, how little security have we when we trust our happiness in the hands of others!

We do not see nature with our eyes, but with our understandings and our hearts.

To be happy, we must be true to nature and carry our age along with us.

The perfect joys of heaven do not satisfy the cravings of nature.