No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.

The true cost of oil isn't just the price per barrel—it's the environmental and social impact.

Quality is never an accident; it is always the result of intelligent effort.

Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.

对你的决定保持承诺，但在你的方法上保持灵活。

Sometimes, the deepest pain comes from emotions we cannot express.