If you wish to succeed, you should use persistence as your good friend, experience as your reference, and 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。
思如泉涌
Experience more than sufficiently teaches that men govern nothing with more difficulty than their tongues. 经验给我们太多的教训，告诉我们人类最难管制的东西，莫过于自己的舌头。
