Newton's Fourth Law: Every action has an equal and opposite satisfaction.

They tire of quiet, that have known the storm

Never throw mud: you can miss the target, but your hands will remain dirty.

The sweeter the apple, the blacker the core. Scratch a lover and find a foe!

When I was young and bold and strong, The right was right, the wrong was wrong. With plume on high and flag unfurled, I rode away to right the world. But now I’m old - and good and bad, Are woven in a crazy plaid. I sit and say the world is so, And wise is s/he who lets it go.

Every year, back comes Spring, with nasty little birds yapping their fool heads off and the ground all mucked up with plants.

It's easier to write about those you hate — just as it's easier to criticize a bad play or a bad book.