The essence of mathematics is not to make simple things complicated, but to make complicated things simple.
数学的本质不是把简单的事情复杂化,而是把复杂的事情简单化。
There are some people who never have fallen in love,if they hadn't heard there was such a thing.
因此,人们联合成立共和国、置身于政府之下的伟大和主要目的是保护他们的财产。