There are some people who never have fallen in love,if they hadn't heard there was such a thing.
如果没听说过恋爱是什么的话,有些人根本不会坠入爱河。
If you don’t take risks, you’ll never know what you could have achieved.
正确陈述的反面是错误陈述。但一个深刻真理的反面很可能是另一个深刻真理。