小人专门期望他人的恩惠，但受恩后就忘；君子则不轻易受人恩惠，若受恩于人，则必定想法图报。
People demand freedom of speech as a compensation for the freedom of thought which they seldom use.
In the realm of quantum materials, the concept of topology provides a powerful lens through which we can understand and predict new phases of matter.
"History is not just a series of events, but a complex web of human experiences and emotions."