The most exciting thing is when you suddenly see the solution to a problem that has been puzzling you for a long time.

The most common form of despair is not being who you are.

自由就像我们呼吸的空气；没有它，我们会窒息。

江河不嫌弃用小溪的水来灌注自己，所以能汇成巨流。被称为圣人的人，不推辞难事，不违背自然规律，所以能成为名扬天下的大人物。