不完全合同是常态，而非例外。
We are all descendants of successful ancestors; failure left no progeny.
There is no necessary connection between law and morality.
数学的本质在于它的自由。
I try to avoid clichés and strive for originality in my work.
"Children's literature has the power to shape minds and change lives."
永远追求卓越，而不是完美。