Be not afraid of going slowly, be afraid only of standing still.
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 Alva Edison (1847-1931) American inventor.
We have not wings we cannot soar; but, we have feet to scale and climb, by slow degrees, by more and more, the cloudy summits of our time.
Henry Wadsworth Longfellow (1807-1882) U.S. poet.
Every convenience brings its own inconveniences along with it.
Today's progress was yesterday's plan.
Most people are in favor of progress, it's the changes they don't like.
All progress is initiated by challenging current conceptions, and executed by supplanting existing institutions.
George Bernard Shaw (1856-1950) Irish writer.
To finish a work? To finish a picture? What nonsense! To finish it means to be through with it, to kill it, to rid it of its soul, to give it its final blow the coup de grace for the painter as well as for the picture.
Pablo Picasso (1881-1973) Spanish painter.
Not to go back is somewhat to advance, and men must walk, at least, before they dance.
Alexander Pope (1688-1744) English poet and satirist.
The art of progress is to preserve order amid change, and to preserve change amid order.
Alfred North Whitehead (1861-1947) English mathematician.