It is a curious property of research activity that after the problem has been solved the solution seems obvious. This is true not only for those who have not previously been acquainted with the problem, but also for those who have worked over it for years.
Edwin LandWe took on things which people might think would take a year or two. They weren't particularly hard. What was hard was believing they weren't hard.
Edwin LandThe test of an invention is the power of an inventor to push it through in the face of staunch-not opposition, but indifference-in society.
Edwin Land