These quotes from Henry David Thoreau were taken from
this web site, which I believe to be a legitimate warehouse for such things.
Do not be too moral. You may cheat yourself out of much life. Aim above morality. Be not simply good; be good for something.
Go confidently in the direction of your dreams! Live the life you've imagined. As you simplify your life, the laws of the universe will be simpler.
If you have built castles in the air, your work need not be lost; that is where they should be. Now put the foundations under them.
Men have become the tools of their tools. (
Consider this in light of the computer age.)
That man is the richest whose pleasures are the cheapest.
Any fool can make a rule, and any fool will mind it.