The most innovative solutions often come from constraints.

Customer satisfaction is the only currency that matters in the long run.

The secret of change is to focus all your energy not on fighting the old, but on building the new.

除非一个方程式表达了上帝的旨意，否则对我来说毫无意义。

真正的成长来自于挑战现状，而不仅仅是维持现状。

To be forgiven is only half the gift. The other half is that we also can forgive.