In the depth of solitude, I found the presence of all.
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。
儿童擅长在自由活动中建立规律。
The harder you work, the luckier you get.
当年的年轻人已变成了花下之尘。
第一个用辱骂代替投石的人,是文明的奠基者。
Choose the life that is most useful, and habit will make it the most agreeable.