Known Quote by Alex Haley

Optimists are usually wrong. But all the great change in history, positive change, was done by optimists.

— Thomas Friedman

“An optimist is someone who thinks that on planet number five the history of mankind will be less bloody. A pessimist is one who…

— Milan Kundera

Optimists think that this is the best of all possible worlds; pessimists fear they are right.

— J. Robert Oppenheimer

An extreme optimist is a man who believes that humanity will probably survive even if it doesnt take his advice.

— John McCarthy

An extreme optimist is a man who believes that humanity will probably survive even if it doesn't take his advice.

— John McCarthy

I've been thinking about disowning some of my genes lately. I have a few healthy, happy, long-living optimists in my family tree - most…

— Ariel Gore

I've never been an optimist, but that's fine because pessimists have the possibility of being agreeably surprised.

— Roger Scruton

Both optimists and pessimists contribute to society. The optimist invents the aeroplane, the pessimist the parachute.

— George Bernard Shaw

Both optimists and pessimists contribute to our society. The optimist invents the airplane and the pessimist the parachute.

— G B Stern

In this world, the optimists have it, not because they are always right, but because they are positive. Even when they are wrong they…

— David Landes

Optimists and pessimists die the exact same death, but they live very different lives!

— Shimon Peres

An optimist understands that life can be a bumpy road, but at least it is leading somewhere. They learn from mistakes and failures, and…

— Harvey Mackay