The worm turns.

Time heals all wounds.

Turnabout is fair play.

Two's company, three's a crowd.

Variety is the spice of life.

We may give advice, but we cannot give conduct.

What a story these old walls could tell.

When pleasure interferes with business, give up business.

Where there's smoke, there's fire.

Wishes won't wash dishes.

You can't fit a round peg in a square hole.

You can't unscramble an egg.

You don't put robbers to work in a bank.

You made your bed, now lie in it.

You make a mountain of a mole-hill.