The obligation of subjects to the sovereign is understood to last as long, and no longer, than the power lasteth by which he is able to protect them.
"The writer is a man who is always trying to find the truth, the truth about himself, the truth about the world, the truth about life."
数学研究是一次进入未知的旅程，每一次发现都为新的谜题打开了大门。