28、If you wish to succeed , you should use persistence as your good friend , experience as your reference , prudence as your brother and hope as your sentry. (Thomas Edison , American inventor) 如果你希望成功，当以恒心为良友、以经验为参谋、以谨慎为兄弟、以希望为哨兵。
29、I want to bring out the secrets of nature and apply them for the happiness of man . I dont know of any better service to offer for the short time we are in the world .(Thomas Edison , American inventor) 我想揭示大自然的秘密，用来造福人类。我认为，在我们的短暂一生中，最好
