Ideas leave traces everywhere (book margins, random pieces of paper, hands), but I always come back to the sketchbook for a proper dialogue.

In order to believe something fantastic, it is often only necessary to suspend disbelief and give yourself permission to explore the irrational.  Worlds awake from our imagination full of amazing perspective, colors, textures and characters.  In realms such as these there need be no constraint other than the limits of our inspiration.