大自然从未背叛过爱她的心。

"The mind is not a structure but a process."

The past is a shadow that follows us, but the future is a light that guides us.

"The only limit to our realization of tomorrow is our doubts of today."

数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。

请求原谅比获得许可更容易。