The complexity of a learning problem is often determined by the size and structure of the hypothesis space.

每一次划水，每一次呼吸，每一刻都离你的目标更近一步。

History is the shadow cast by the present.

The key to success is to focus on creating value, not just making money.

自然界的所有效应只是少数不变定律的数学结果。