67.The best and most beautiful things in the world cannot be seen or even touched. They must be felt with the heart. 世界上最美好的东西是无法看见、甚至无法触摸的,它们必须用心去感受。——[美]海伦·凯勒
70.If you wish to success, you should use persistence as your good friend,experience as your reference, prudence as your brother and hope as your sentry. 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。——[美]Thomas·Edison