The night is a great teacher, but the stars are its lessons.
A Jewish man with parents alive is a fifteen-year-old boy, and will remain a fifteen-year-old boy until they die!
The well bred contradict other people.The wise contradict themselves.
物理定律产生了复杂的结构，至少在一种情况下，一个复杂的结构产生了物理定律。
Leadership in forestry means having the courage to make decisions that will outlast your tenure.