The present is always changing, but the past is fixed.

Innovation is seeing what everybody has seen and thinking what nobody has thought.

邪恶胜利的唯一必要条件是好人无所作为。

真理如狮子，不需要你为其辩护。放开它，它会自己辩护。

机械的完美在于以最小的摩擦和浪费产生预期的效果。

我们是秘密的守护者。