Political language is designed to make lies sound truthful and murder respectable, and to give an appearance of solidity to pure wind.

There is a time for daring,and there is a time for caution, and a wise man understanding which is called for

Anyone who isn't embarrassed of who they were last year probably isn't learning enough.

The mind is not a vessel to be filled, but a fire to be kindled.

科学不仅仅是发现，更是责任。