The barrier to change is not too little caring; it is too much complexity.
改变世界的阻碍，并非人类的冷漠，而是世界实在太复杂。
释义：天之险在于高不可升，地之险在于山川丘陵。王公设险以保卫国家，险的功用非常大。
We must always question our assumptions and be willing to revise our understanding in light of new evidence.
One cannot think well, love well, sleep well, if one has not dined well.
"The best way to learn mathematics is to do mathematics."
管理者接受现状；领导者挑战现状。