When I am working on a problem, I never think about beauty but when I have finished, if the solution is not beautiful, I know it is wrong.

Can one think that because we are engineers, beauty does not preoccupy us or that we do not try to build beautiful, as well as solid and long-lasting, structures? Aren’t the genuine functions of strength always in keeping with unwritten conditions of harmony?

Aeroplanes are not designed by science, but by art in spite of some pretence and humbug to the contrary. I do not mean to suggest that engineering can do without science, on the contrary, it stands on scientific foundations, but there is a big gap between scientific research and the engineering product which has to be bridged by the art of the engineer.