By Rachel Field
I used to think I had ambition - but now I'm not so sure. It may have been only discontent. They're easily confused.
— Rachel Field
Rachel Field was an American writer and poet. This quote is dialogue in her novel All This And Heaven Too, first published in 1938 and later made into a movie of the same name.
If necessity is the mother of invention, discontent is the father of progress.
— David Rockefeller
Restlessness is discontent and discontent is the first necessity of progress. Show me a thoroughly satisfied man and I will show you a failure.
— Thomas Edison