Plautus

What's done is done.

Out of sight, out of mind.

When in Rome, do as the Romans do.

The early bird catches the worm.

All's well that ends well.

Look before you leap.

No pain, no gain.

Money makes the world go 'round.

The customer is always right.

Actions speak louder than words.

Beggars can't be choosers.

Don't count your chickens before they hatch.

Easy come, easy go.

Every dog has its day.

Familiarity breeds contempt.

Honesty is the best policy.

It's never too late to mend.

Laughter is the best medicine.

Let sleeping dogs lie.

Might makes right.