一个人做了好事应当忘记，不要念念不忘，更不要希冀别人回报。
人的心胸欲念多则狭窄，欲念少则心胸宽广；人的心境多欲则忙乱，少欲则悠闲；人的心术多欲则险恶，少欲则和平；人的心事多欲则忧愁，少欲则快乐；人心之气象，多欲则软弱，少欲则刚强。
I don’t need anyone to understand me. My art speaks for itself.
A proof of a proposition is a process the nature of which is such as to produce in us a belief in that proposition.