thank u very much Tdol for ur editing, it's better than the spelling & grammar checking function in Microsoft Word ^^
about the quote I mention in the last sentence, I do not know its origin
I just translated it into English coz it's really my favorite maxim.
Should I say that "I have heard this saying from someone.."(sth like that) to avoid plaigierization? And what do u think about the content? Does this essay work? I felt that I have a really big problem with writing long and complex sentences :((:((:((