It may seem paradoxical to say that there are similarities between a poetical and a commercial mind, but it is a fact that both a poet and a businessman are constantly dealing with problems that are directly related to people and for which sensitivity is of prime importance. The business-like mind is sometimes described as being cold, sober, calculating, hard; but perhaps these are simply qualities that are necessary for dealing with people if one wants to achieve anything. One is always concerned with the mysterious, incalculable, dark, hidden aspects for which there is no easy formula, but which form essentially the same human element as that which inspires the poet. —M. C. Escher, 1898 - 1972