28、Ifyouwishtosucceed,youshouldusepersistenceasyourgoodfriend,experienceasyourreference,prudenceasyourbrotherandhopeasyoursentry.(ThomasEdison,Americaninventor) 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、Iwanttobringoutthesecretsofnatureandapplythemforthehappinessofman.Idontknowofanybetterservicetoofferfortheshorttimeweareintheworld.(ThomasEdison,Americaninventor) 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
