学习数学的唯一方法就是做数学。
The only way to learn mathematics is to do mathematics.
如果我们为之奋斗,煤炭的未来是光明的。
The past is a cupboard full of light and all you have to do is find the key that opens the door.
必须将创造过程视为正常人群在自我实现过程中的表达方式。