In the end, we are all alone. But that loneliness is what connects us all.

The more you win, the more you believe in yourself and the more you want to win.

The best way to be happy is to give.

解释：大部分鸟类都是雄性的，而雌鸽却是雌性的，说明了鸟类性别的特殊性。

研究历史就是学习时间的语法。