Edwin H. Land (1909–1991) American scientist and inventor
As quoted in "The Vindication of Edwin Land" in Forbes magazine, Vol. 139 (4 May 1987) p. 83; this was later humorously altered:<br>Don't do anything that someone else can do. Don't undertake a project unless it is manifestly important and nearly impossible. <br class="br">Edwin Ladd, Department of Astronomy, Harvard University (August, 1990), as quoted by Lincoln J. Greenhill at Harvard University http://www.cfa.harvard.edu/~lincoln/