衰败的恶果，都是强盛时不知修持而积累来的。人老后的疾病，都因年轻时不知养生而落下的。

To find yourself, think for yourself.

Men become civilized, not in proportion to their willingness to believe, but in proportion to their readiness to doubt.

You can’t make art without making mistakes.

The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.