我常常觉得，做人最重要的是有心。
我成日都觉得，做人最紧要系有heart。
Variant: All human actions have one or more of these seven causes: chance, nature, compulsions, habit, reason, passion and desire.
Pleasure is the greatest good, and we should seek it and avoid pain.
"There is no such thing as a new idea. It is impossible. We simply take a lot of old ideas and put them into a sort of mental kaleidoscope. We give them a turn and they make new and curious combinations."
The best ideas come from not knowing the answer.
"The canvas is a battlefield where the artist fights for truth."
要理解行为，我们必须从生存和适应的背景中审视其目的。