Quote by Robert Solow
"The law of diminishing returns applies to many things, but not to knowledge."
More from Robert Solow
"A higher standard of living means consuming more goods and services. But it also means having more leisure time, better health, better education, a cleaner environment, safer cities, and more equality of opportunity."
"Technical progress is something that happens in the economy, but the rate at which technical progress happens is not entirely determined by the pace at which new ideas are invented."
"The most important thing to understand about economic growth is that it is not a natural process."
"Productivity isn't everything, but in the long run it is almost everything."