Warp and woof.............................

     We assert, then, that nothing has been accomplished without the interest of the actors; and if interest be called passion, inasmuch as the whole individuality, to the neglect of all other actual or possible interests and claims, is devoted to an object with every fibre of volition, concentrating all its desires and powers upon it, then we may affirm absolutely that without passion nothing great in the world has been accomplished.  Two elements, therefore, enter into the object or our inspection;  the first is the idea, the second is human passions;  the one the warp, the other the woof of the vast tapestry of human history.

-Georg Wilhelm Friedrich Hegel,  Lectures on the Philosophy of History