Quote by George Stephenson
"I have found that the most important tool an engineer possesses is his imagination."
More from George Stephenson
"A man who does things wrong will learn the consequences; a man who does nothing will learn nothing."
"The greatest obstacle to progress is the fear of change."
"I have not failed. I've just found 10,000 ways that won't work."
"Success is not final, failure is not fatal; it is the courage to continue that counts."