Please note I have edited this post as I actually misquoted Akhenaton. Not intentionally. It was just an an old fashioned typo. I have corrected the quote to read he that increases his riches increaseth his cares, I originally had he who increases his wisdom increases his cares. My apologies.
To be satisfied with a little is the greatest wisdom,
And he that increases his riches increaseth his cares;
But a contented mind is a hidden treasure,
And trouble findeth it not.