Most of us spend too much time on what is urgent and not enough time on what is important.

The true genius shudders at incompleteness - and usually prefers silence to saying something which is not everything it could be.

做好事如同背负重物而登山，志向虽已确立，但总是担心力不从心；干坏事如同骑马下山，虽然未加鞭，但却欲驻足而难以自禁。