Power corrupts; absolute power corrupts absolutely Link to proverb.
It's an ill wind that blows no one any good Link to proverb.
Person is known by the company he keeps - A.
When the oak is before the ash, then you will only get a splash; when the ash is before the oak, then you may expect a soak.
Build a better mousetrap and the world will beat a path to your doorLink to proverb.
Money isn't everything.
Fortune favours the brave.