The historian must have a kind of faith that humanity will not and cannot perish.
Science progresses by constantly questioning and refining our understanding.
Small acts of kindness can boost your mood more than you might expect.
质量不是机会;它是一种选择。
自由就是告诉人们他们不想听的事情的权利。
真正的艺术来自于内心的真诚。
对于每一位专家,都会有一个同等的或者完全相反的专家。但对于每一个事实,并不一定就有一个同等的或者相反的事实存在。