seeing is believing

Alternative form of ce qu'il ne faut pas entendre

it takes all kinds to make a world, it takes all sorts, variety is the spice of life

one must choose the lesser of two evils

Alternative form of entre deux maux, il faut choisir le moindre: one must choose the lesser of two evils

still waters run deep

enough is as good as a feast; you can have too much of a good thing

in for a penny, in for a pound

One must let sleeping dogs lie

One must strike while the iron is hot