The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.

Ignoring isn’t the same as ignorance, you have to work at it.

商业的成功源于理解人，而不仅仅是产品。

人は、自分が思っている以上に強い。でも、その強さに気づかないだけ。