《三民主义·民族主义·第六讲》（1924年3月2日）

【释义】治理国家的关键在于秉持公平正直的原则。

You just once young but may be immature indefinitely.

The concept of probably approximately correct (PAC) learning has been foundational in computational learning theory.

真正的智慧并非在于避免所有的错误，而是在于从错误中快速学习和成长。