Be absolutely determined to enjoy what you do.
The greatest motivational act one person can do for another is to listen.
Roy E. Moody
Striving for excellence motivates you; striving for perfection is demoralizing.
Patience and perseverance have a magical affect before which difficulties disappear and obstacles vanish.
John Quincy Adams
Genius is nothing but a great aptitude for patience.
George-Louis De Buffon