learn and live.活着，为了学习learning makes a good man better and ill man worse.好人越学越好，坏人越学越坏learn not and know not.不学无术learn to walk before you run.先学走，再学跑let bygones be bygones.过去的就让它过去吧let sleeping dogs lie.别惹麻烦let the cat out of the bag.泄漏天机lies can never changes fact.谎言终究是谎言lies have short legs.谎言站不长life is but a span. 人生苦短life is half spent before we know what it is.人过半生，方知天命life is not all roses.人生并不是康庄大道life without a friend is death.没有朋友，虽生犹死like a rat in a hole.瓮中之鳖like author, like book.文如其人。
like father, like son.有其父必有其子like for like.一报还一报like knows like.惺惺相惜like mother, like daughter.有其母必有其女like teacher, like pupil.什么样的老师教什么样的学生like tree, like fruit.羊毛出在羊身上little things amuse little minds.小人无大志look before you leap.摸清情况再行动lookers-on see more than players.当局者迷，旁观者清losers are always in the wrong.胜者为王，败者为寇lost time is never found again.岁月既往，一去不回love at first sight.一见钟情love cannot be compelled.爱情不能强求love is blind.爱情是盲目的love is full of trouble.爱情充满烦恼love is never without jealousy.没有妒忌就没有爱情。
love me, love my dog.爱屋及乌。