The people who think enough is an optimistic state of mind,you can not see things does not mean that does not exist,you can not see what is the best,is the key to their feelings,their own views,and we behave this way,Go its own way to let people learn about the physical and mental,I think,is `` it depends on the individual
英语翻译知足者常乐是一种乐观的心态,你看不到的东西不代表不存在,你看到的东西也不可能是最完美,关键是在于自己的感觉,自己