The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.

Some people are extraordinarily good at knowing the limits of their knowledge because they have to be.

There is no God and we are his prophets.

无论多么困难，我都不会放弃我的梦想。

The family is the basic unit of society, and it is under attack.

化工行业必须在可持续发展方面引领潮流，我们的未来取决于此。