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

Discontent is the first necessity of progress.

Relentlessness and discontent are the first necessities of progress.

I didn't fail 1000 times. The light bulb was an invention with 1000 steps.

They say President Wilson has blundered. Perhaps he has, but I notice he usually blunders forward.

True progress is slow but sure.

It has been women who have breathed gentleness and care into the harsh progress of mankind.

Dalai LamaSpiritual Leader

Elon MuskBusinessman