In youth we learn; in age we understand.
The poor man wishes to conceal his poverty, and the rich man his wealth: the former fears lest he be despised, the latter lest he be plundered.
None are so eager to gain new experience as those who don't know how to make use of the old ones.
Imaginary evils are incurable.
Do your duty until it becomes your joy.
They understand but little who understand only what can be explained.