Mathematical laws are universal and have remained unchanged since the beginning of time. Euclid, Euler and all the others discovered and put into words things that were already there.

• 数学规律从古至今是放之四海而皆准的普遍真理。欧几里德、拉等等数学家们，只不过把这些规律发现了然后用文字表述出来罢了。