I am only resolved to act in that manner, which will, in my own opinion, constitute my happiness, without reference to you, or to any person so wholly unconnected with me.
不修养品德,不讲习学问,听到正义不能追随,有缺点不能改正,这些都是我所忧虑的。
Mathematics is the music of reason.
Simplicity is the ultimate sophistication.