If anything can go wrong, it will
If a job is worth doing it is worth doing well
If at first you don’t succeed try, try and try again
If God had meant us to fly he’d have given us wings
If ifs and ands were pots and pans there’d be no work for tinkers
If it ain’t broke, don’t fix it
If life deals you lemons, make lemonade
If the cap fits, wear it
If the shoe fits, wear it
If wishes were horses, beggars would ride
If you build it they will come
If you can’t be good, be careful
If you can’t beat em, join em
If you can’t stand the heat get out of the kitchen
If you lie down with dogs, you will get up with fleas
If you pay peanuts, you get monkeys
If you want a thing done well, do it yourself
Ignorance is bliss
Imitation is the sincerest form of flattery
In for a penny, in for a pound
In the kingdom of the blind the one eyed man is king
In the midst of life we are in death
Into every life a little rain must fall
It ain’t over till the fat lady sings
It goes without saying
It never rains but it pours
It takes a thief to catch a thief
It takes all sorts to make a world
It takes one to know one
It takes two to tango
It’s all grist to the mill
It’s an ill wind that blows no one any good
It’s best to be on the safe side
It’s better to give than to receive
It’s better to have loved and lost than never to have loved at all
It’s better to light a candle than curse the darkness
It’s better to travel hopefully than to arrive
It’s easy to be wise after the event
It’s never too late
It’s no use crying over spilt milk
It’s no use shutting the stable door after the horse has bolted
It’s the early bird that catches the worm
It’s the empty can that makes the most noise
It’s the singer not the song
It’s the squeaky wheel that gets the grease