If you have built castles in the air your work need not be lost; that is where they should be. Now put foundations under them. – Henry David Thoreau

Personally, I love the idea that you can build castles in the air. You just need to put a firm foundation underneath them.  Castles in the air; it’s just another term for a dream.  Dreams don’t come with a firm foundation. Dreams come with a lot of things, but they don’t come with a foundation.  If they did, they’d be goals that you achieved.

Dreams, or castles in the air, are a chance for your mind to soar freely, flitting from here to there over various ideas, some getting bigger and some getting smaller, until finally they crystalize  into into a goal. When you have the goal and begin to work toward it, that is when you build a firm foundation under your castle in the air.