“Ambition drives us to achieve things that to others are impossible. Without ambition people would never reach the moon.”
Related quotes
James Champy, Nitin Nohria (2001), The Arc of Ambition: Defining the Leadership Journey. p. 1

Principles and Priorities : Programme for Government (September 5, 2007)

“Ambition has its disappointments to sour us, but never the good fortune to satisfy us.”
"On True Happiness", Pennsylvania Gazette (20 November 1735).
1730s
“People with ambition don't give a damn what other people think of them.”
The Satanic Bible (1969)

“Time is the only critic without ambition.”
On Critics
Writers at Work (1977)

“A man without ambition is like a bird without wings”
Source: https://quoteinvestigator.com/2015/10/14/wings/
Daily Telegraph, 5 Jul 2008 http://www.telegraph.co.uk/culture/music/3555750/ABBAs-Bjorn-Ulvaeus-and-Benny-Anderson-We-will-never-reform.html