To muse, to ponder, to meditate; to be lost in thought.  Some call it day dreaming.  It's thinking of everything and nothing at the same time. 

Photography, writing and canoeing are probably the three things I like the most.  Sometimes I'll grab the camera pack and head out to shoot.  I wander the trails, smell the smells, stop and listen to the sound of silence, at least the man made kind.  Soon I'm able to hear the gentle rustle of leaves, a squirrel rocketing up a tree, a small bird flitting from branch to branch.