Variant: All human actions have one or more of these seven causes: chance, nature, compulsions, habit, reason, passion and desire.

Man is condemned to be free.

"The act of writing is an act of optimism. You wouldn't take the trouble to do it if you felt it didn't matter."

大多数人不是为了理解而听，而是为了回答而听。

"We are all in the gutter, but some of us are looking at the stars."

"The world is a mirror, and the mirror is a lie."

Understanding the psychology of decision-making can help us make better choices in life.