The passage of time is both a blessing and a curse.

The time which we have at our disposal every day is elastic; the passions that we feel expand it, those that we inspire contract it; and habit fills up what remains.

If you're not failing, you're not pushing hard enough.

Optimism is a learned skill.

写作很简单：你只需要盯着白纸看，直到额头上冒出鲜血。

A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.

野外的规则是适者生存。你必须强壮、聪明、适应力强才能生存下来。

在数学中，发现的旅程往往比目的地本身更有价值。

通信的基本问题是在一点精确或近似地复现另一点选择的信息。