Knowledge is only useful if it’s applied.
我画的每一条线都是一个道德决定。
你不必总是比别人强,但要比过去的自己更强。
The beauty of mathematics is that it is both precise and creative.
因此,自爱是行动的必要原则。
I'm not perfect, but I'm always me.
Change is hardest in the beginning, messiest in the middle, and best at the end.