If you go camping, at night you'll hear all the nocturnal animals.
如果你去野营,晚上可以听到动物的夜歌。
He who rides a tiger is afraid to dismount.
骑虎者难下。
John Dewey has said in all seriousness that the part played by custom in shaping the behaviour of the individual,as against any way in which he can affect traditional custom,