人不是不会变的英语名句

下面的句子可供参考：

There is no royal road to learning.

求知无坦途。 

Learn to walk before you run.

先学走，再学跑。

The person can't keep unchanged all the time.

人不可能一直不变的。

It takes three generations to make a gentleman.

十年树木，百年树人。

…等。