数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。

万物都存在于心中，心中充满道理，充塞宇宙的也无非是这个理。

The greatest journeys are those taken within.

"Theologians talk about a prevenient grace that precedes grace itself and allows us to accept it. I think there must also be a prevenient courage that allows us to be brave - that is, to acknowledge that there is more beauty than our eyes can bear, that precious things have been put into our hands and to do nothing to honor them is to do great harm."

逆水行舟，不进则退。