数学的力量在于它简化复杂事物的能力。
男性和女性在短期择偶欲望上存在差异，因为这对我们祖先的繁殖利益和代价不同。
Success is not final, failure is not fatal: it is the courage to continue that counts.
It is a fine thing to have ability,but the ability to discover ability in others is the true test.
"The past is never dead; it’s not even past until we’ve written it."