Without indifference, there is no clear ambition, and without tranquility, there is no way to go far.

Quietness is to cultivate one's morality, and frugality is to cultivate virtue. (Zhuge Liang) The last two sentences are the origin of the idiom: "Indifferent to fame and fortune, tranquility leads to the distance"

Quiet mind will lead to concentration; quiet thinking will lead to generalization; quiet residence will lead to peace; silence will lead to maturity