Nothing can stop the man with the right mental attitude from achieving his goal; nothing on earth can help the man with the wrong mental attitude.

几何学是关于永恒存在的知识。

数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。

"The universe is a big place, perhaps the biggest."

In a rapidly changing market, the only constant is change itself, and we must learn to adapt.

The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth.