人类心智的结构更适合更新世而非现代世界。
数学的力量在于它的普遍性和超越文化界限的能力。
The development of the vital forms under the influence of external conditions is a subject of the highest importance.
I only dread one day at a time!
A miner’s helmet doesn’t just protect the head—it symbolizes the dignity of hard work.
We read books to find out who we are.
没有听到不如亲耳听到,亲耳听到不如亲眼见到,亲眼见到不如清楚知道,清楚知道不如亲自实践。
我们从失败中学到的东西要比在成功中学到的东西要多得多。
God could not be everywhere, and therefore he made mothers.