The voice is an instrument that is inside you. It’s the only instrument that you can’t see.
Topology is the study of the properties of a figure that are unchanged by any deformation.
一般人的毛病,就是容易受局部的蒙蔽,因而不能明白大道理。眼光不妨放长远一些,站得高一些,能看得更广,格局更大。
The past is not a burden but a foundation.