Time is a slippery thing: lose hold of it once, and its string might sail out of your hands forever.

La plus perdue de toutes les journées est celle où l'on n'a pas ri.

The balance between economy and ecology is the core of modern forestry.

A man's errors are his portals of discovery.

The spirit of man is more important than mere physical strength, and the spiritual spark in man can be fanned into flame.

生命必须被赋予意义，因为它本身显然没有意义。