释义：要了解过去和现在，以便灵活应变，适应变化。

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

All good writing is swimming under water and holding your breath.

A sober looks shows that just have the world gotten to be a better place after all; it is also grown a bit worse at the exact same rate.; a one step up, a one step back sort of cosmic balance between forward progress, and cultural retreat, that puts man kind on a bell curve of existence.

The best books are those that make you see the world anew.

劳动是创造财富的唯一途径。