No one is altogether to be blamed for the defects of his nature; but he is blameworthy if he takes no pains to correct them.  
The typewriting machine, when played with expression, is not more annoying than the piano when played by a sister or near relations.
关于煤炭的讨论必须超越"支持"或"反对"—我们需要解决方案,而不是口号。
Start where you are, with what you have. Make something of it. Never be satisfied.