数学的美在于它允许我们抽象出现实世界的复杂性,专注于基本原则。
The beauty of mathematics is that it allows us to abstract away the complexities of the real world and focus on the underlying principles.
对待妻室子女和仆人,应说话谨慎稳重,日常饮食起居生活中,要随时检点言行。