The English saying7

The on-looker sees most of the game.

旁者清。

Wisdom is a good purchase though we pay dear for it.

为了求知识，代价虽高也值得。

Time and tide waits for no man.

岁月不等人。

If you want knowledge,you must toil for it.

若要求知，必须刻苦。

Learn to walk before you run.

循序渐进。

Knowing something of everything,and everything of something.

通百艺而专一长。

From words to deeds is a great space.

言行之间，大有距离。