The progress of science consists in the expansion of the field of experience.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法的:它是关于理解的。
【释义】:言论应有明确的主旨,行动应遵循一定的方法,亲近他人一定要有恰当的方式。