The only relevant test of the validity of a hypothesis is comparison of its predictions with experience.
检验假设有效性的唯一相关标准是其预测与经验的比较。
Music is the language that transcends all barriers.
数学的力量来自于它的抽象和概括能力,将具体问题转化为普遍真理。
Quality is never an accident; it is always the result of intelligent effort.