题目内容：

请英语+汉语高手帮忙翻译些句子.(有些是俗语)
1.The shortest answer is doing.
2.All things are difficult before they are easy.
3.Where there is a will,there is a way.
4.He laughs best who laughs last.
5.Nothing is too difficult is you put your heart into it.
6.Don't trouble troubles until troubles trouble you.
7.To know oneself is true knowledge.
8.No man can do two things at noce.
9.To give is better than to receive.
10.An hour in the morning is worth two in the evening.
11.A life without a friend is a life without a sun.
12.Politeness costs nothing but wins everything.
13.Learning is better than house and land.
14.He that is ill to himself will be good to nobody.
15.A friend in need is a friend indeed.
16.Better withoutmoney without friends.
17.A man without a friend is only half a man.
18.If you want a thing well done,do it yourself.
19.Life is a hourse,and either you ride is or itrides you.
20.Don't put off until tomorrow what can be done today.
21.Reading is to the mind what the exercise to the body.