在这个行业里，你必须脸皮厚。

To truly understand the cosmos, we must first understand the smallest particles that make it up.

The measure of a man is what he does with power.

The passions that incline men to peace are fear of death, desire of such things as are necessary to commodious living, and a hope by their industry to obtain them.

从n对观测值的样本中获得的相关系数的可能误差是sqrt((1-r²)/(n-2))。