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A man knows when he is growing old because he begins to look like his father.

Silence is argument carried out by other means.

我是一個戰(zhàn)士，我喜歡挑戰(zhàn)。

The causal framework is the foundation of scientific reasoning.

I love you not because of who you are， but because of who I am when I am with you。

Intolerance of others’ views (no matter how ignorant or incoherent they may be) is not simply wrong; in a world where there is no right or wrong, it is worse: it is a sign you are embarrassingly unsophisticated or, possibly, dangerous.

True leadership in energy means balancing economic growth with environmental responsibility.