The quality of an organization's principles determines the quality of its actions.
数学直觉就像肌肉一样 - 通过锻炼会变得更强大。
"The most powerful works are those that leave space for the viewer."
The laws that forbid the carrying of arms are laws of such a nature. They disarm only those who are neither inclined nor determined to commit crimes.... Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than to prevent homicides, for an unarmed man may be attacked with greater confidence than an armed man.