Man hath still either toys or care: But hath no root, nor to one place is tied, but ever restless and irregular, about this earth doth run and ride. He knows he hath a home, but scarce knows where; He says it is so far, that he has quite forgot how to go there
—Henry Vaughan (1621–95) Anglo-Welsh Metaphysical Poet
If necessity is the mother of invention, discontent is the father of progress.
—David Rockefeller (1915–2017) American Businessman, Philanthropist
I am as frustrated with society as a pyromaniac in a petrified forest.
—A. Whitney Brown (b.1952) American Comedian, TV Personality
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 (1847–1931) American Inventor, Scientist, Entrepreneur
Noble discontent is the path to heaven.
—Thomas Wentworth Higginson (1823–1911) American Social Reformer, Clergyman
Discontent is the first step in the progress of a man or a nation.
—Oscar Wilde (1854–1900) Irish Poet, Playwright