过去半个世纪最重要的政治发展是自由民主在世界范围内的传播。

The sense of smell is directly connected to the emotional centers of the brain, which is why smells can evoke such strong memories.

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.

才华比食盐还廉价。才华横溢者与成功者的区别在于大量的努力。