数学不是关于数字、方程、计算或算法的：它是关于理解的。
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
"Sometimes the hardest thing and the right thing are the same."
Life is not measured by the number of breaths we take, but by the moments that take our breath away.
I think that the greatest gift you can give to somebody is your own personal development.
可持续性不是一种趋势，而是商业的未来。