过去从未消逝，它甚至还未过去。
我不完美，但我始终是我自己。
The best way to learn mathematics is to do mathematics.
我不是来追求完美的，我是来展现真实的自己。
Facts are stubborn things; and whatever may be our wishes, our inclinations, or the dictates of our passion, they cannot alter the state of facts and evidence.