If you don't know where you're going, you might not get there.

What Time Is It? You Mean Now?: Advice for Life from the Zennest Master of Them All, Simon and Schuster, 2003, ISBN 0743244532, p. 39

You've got to be careful if you don't know where you're going because you might not get there. || If you don't know where you're going, you'll wind up somewhere else.