译文：少年不知道早起勤奋学习，到老了后悔读书少就太迟了。赏析：人在年轻时，精力旺盛，正是勤奋读书，努力奋斗的时候。
We are all walking around with an evolutionary user's manual in our heads, but most people don't realize it.
The state of nature has a law of nature to govern it, which obliges every one: and reason, which is that law, teaches all mankind, who will but consult it, that... no one ought to harm another in his life, health, liberty, or possessions.
The interplay between light and matter at attosecond timescales reveals a universe far more dynamic than we ever imagined.
"Language is the only homeland."