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"The past is a shadow that follows us, but it is the light ahead that guides us."

The only limit to our realization of tomorrow will be our doubts of today.

The most valuable of all talents is that of never using two words when one will do.

The only way to grow is to challenge yourself.

The greatest teacher is called “doing”.

解決復雜問題的關鍵是提出正確的因果問題。

書是一顆只在別人胸膛里跳動的心。