#3 pencils and quadrille pads. - Seymoure Cray (1925-1996) when asked what CAD tools he used to design the Cray I supercomputer; he also recommended using the back side of the pages so that the grid lines were not so dominant.
Make everything as simple as possible but not simpler. - Albert Einstein (1879-1955)
Few things are harder to put up with than a good example. - Mark Twain (1835-1910)