You can't take it with you. If you buy cheaply, you pay dearly. Haste makes waste. It's a good horse that never stumbles. Better to remain silent and be thought a fool, than to open your mouth and remove all doubt.
Once bitten, twice shy Fool me once, shame on you. Fool me twice, shame on me. History repeats itself.
If you're in a hole, stop digging. There's no time like the present. Even a dog can distinguish between being stumbled over and being kicked. It's a poor job that can't stand at least one supervisor.
Hawks will not pick out hawks' eyes. From Isle of Beauty by Thomas Haynes Bayly Scritching like a Whitnick Give and ye shall receive. - Jesus Christ The pitcher goes so often to the well that it comes home broken at last. This is often misstated as the proof is in the pudding.
A good surgeon has an eagle's eye, a lion's heart, and a lady's hand. Blood will out. Hunger makes good kitchen. New broom sweeps clean.
Keep a thing seven years and you will always find a use for it. You will not rise to the occasion, you will default to the level of your training That I have no time for Like father like son. Keep no more cats than catch mice

Some spam I was just sent.