All things are difficult before they are easy.凡事总是由难而易。
All work and no play makes Jack a dull boy.
只会用功不玩耍,聪明孩子也变傻。
A man becomes learned by asking questions.不耻下问才能有学问。
A man can do no more than he can.凡事都应量力而行。
A man cannot spin and reel at the same time.一心不能二用。