"I'm very much an optimist. I don't think I could do my work if I didn't believe there was some kind of hope for humanity"

"A leader is best when people barely know he exists, when his work is done, his aim fulfilled, they will say: we did it ourselves"

"Talent in cheaper than table salt. What separates the talented individual from the successful one is a lot of hard work"

"One machine can do the work of fifty ordinary men. No machine can do the work of one extraordinary man"

"Work spares us from three evils: boredom, vice, and need"

"The best preparation for good work tomorrow is to do good work today"

"By the work one knows the workman"

"Hope is nature's veil for hiding truth's nakedness"

"The only way to do great work is to love what you do"

"I was married to Margaret Joan Howe in 1940. Although not a scientist herself she has contributed more to my work than anyone else by providing a peaceful and happy home"

"It is the quality of our work which will please God and not the quantity"