Pure mathematics is, in its way, the poetry of logical ideas.
纯数学在某种程度上是逻辑思想的诗歌。
幸福存在于内心。
Risk comes from not knowing what you're doing.
"The measure of a civilization is how it treats its weakest members."
A man may die, nations may rise and fall, but an idea lives on. Ideas have endurance without death.