The perfecting of one's self is the fundamental base of all progress and all moral development.
One joy dispels a hundred cares.
Do not use a cannon to kill a mosquito.
The gem cannot be polished without friction nor man without trials.
Women and people of low birth are very hard to deal with. If you are friendly to them, they get out of hand, and if you keep your distance, they resent it.
Transport a handful of earth everyday and you will make a mountain.