Dynamics
The value of ourselves is but the value of our melancholy and our disquiet. (Maurice Maeterlinck)
The gaiety of life, like the beauty and the moral worth of life, is a saving grace, which to ignore is folly, and to destroy is crime. There is no more than we need, - there is barely enough to go round. (Agnes Repplier)
Happiness is beneficial for the body, but it is grief that develops the powers of the mind. (Marcel Proust)
In heaven above, and earth below, they best can serve true gladness who meet most feelingly the calls of sadness. (William Wordsworth)
Solemnity is the shield of idiots. (Montesquieu)
You have to have a serious streak in you or you can't see the funny side in the other fellow. (Will Rogers)
Gladness of heart is the life of man, and the rejoicing of a man is length of days. (Apocrypha)