故不及跬步，无以至千里；不积小流，无以成江海。
Athousandmilejourneybeginswitheverystep.
SmallStreamsMakeaMightyRiver.
(或者可以直接翻译成符合西方文化的一句：Romewasnotbuiltinondday.
故天将降大任于斯人也，必先苦其心志，劳其筋骨，饿其体肤，空乏其身，行拂乱其所为，所以动心忍性，增益其所不能。
Apersonwhosuffersfromanydifficultiessuchaspain,tiredness,hunger,povertywillbecometalented,alertandsteadfastandcapableoftakinggreatresponsibility.
故予与同社诸君子哀斯墓之徒有其石也而为之记，亦以明死生之大，匹夫之有重于社稷也。
ThegentlemenandIintheinstitutefeltsorryfortheirdeathandwrotethelamentsonthissteletoexpressoursincerecondolences.Webecomeawareofthesignificanceoflifeanddeathbytheincidentandweareheretostressthatagreatcountrycannotneglecttheordinarypeople’sreaction.
关关雎鸠，在河之洲，窈窕淑女，君子好逑。
Theaquaticbirdswerepairingontheriverbankhappilywhenagentlemanhadbeenattractedbyarefinedyounggirl.
管中窥豹，时见一斑。
Anignorantpersonwillneverknowthetruthofthematters.
PS:完全手工翻译，帮楼主翻译这些句子又让我复习了一遍古文啊，呵呵.