The dead are not powerless. Dead, did I say? There is no death, only a change of worlds.
死者并非无力。我说过,死了吗?没有死亡,只有世界的变化。
〈党员须宣传革命主义〉,在梧州对国民党员的演说,1921年10月29日至11月15日间
Your present state determines your future.
The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.
Heredity is nothing but stored environment.