Those of us who have a loved one who suffers from depression, we know the color gray. We know how easily a day can go from technicolor to gray in a single phone call, a downcast look, a sigh. We know that the only other helplessness that is even slightly akin to this, is that which we feel when our children are sick. We think that if we could only make the right meal, say the right thing, plan the right event. We think if we could only smile that much wider, it would become infectious, and all would be all right. We tell ourselves that this too shall pass, but it passes like molasses, and we wait. Brave faces galore in public, nothing can be as it seems. How is your sister, your husband, your uncle, your friend they ask innocently. And you feel your face crack into a thousand pieces as you smile brightly and declare them to be fine. You hear the click of the wheels on the grocery cart as you walk away, and the only way you know how to keep walking without falling, is to align your step...