An aim provides a destination, a point of contrast against the present, and a framework, within which all things can be evaluated. An aim defines progress and makes such progress exciting. An aim reduces anxiety, because if you have no aim everything can mean anything or nothing, and neither of those two options makes for a tranquil spirit. Thus, we have to think, and plan, and limit, and posit, in order to live at all. How then to envision the future, and establish our direction, without falling prey to the temptation of totalitarian certainty?