As fate is inexorable, and not to be moved either with tears or reproaches, an excess of sorrow is as foolish as profuse laughter; while, on the other hand, not to mourn at all is insensibility.
Seneca the YoungerThe intellect must not be kept at consistent tension, but diverted by pastimes.... The mind must have relaxation, and will rise stronger and keener after recreation.
Seneca the Younger