失败并不可怕,可怕的是不敢尝试。
量子力学的本质不在于描述粒子的行为,而在于描述我们对粒子认知的行为。
Today is cruel, tomorrow is crueler, and the day after tomorrow is beautiful. But most people will die tomorrow night, so don't give up today.
No president who performs his duties faithfully and conscientiously can have any leisure.