"Learning never exhausts the mind."
Leonardo da Vinci
"It is difficult to say what is impossible, for the dream of yesterday is the hope of today and the reality of tomorrow."
Robert H. Goddard
"The only limit to our realization of tomorrow will be our doubts of today."
Franklin D. Roosevelt
"Wherever we look upon this earth, the opportunities take shape within the problems."
Nelson A. Rockefeller
"There is no chance, no destiny, no fate, that can hinder or control the firm resolve of a determined soul."
Ella Wheeler Wilcox
"We are what we repeatedly do. Excellence, therefore, is not an act but a habit."
"Do not pray for an easy life, pray for the strength to endure a difficult one."
"For hope is but the dream of those that wake."
"One lifetime is but a second in the history of the earth. What are you doing with your second?"
"Imagination is more important than knowledge"
"There is nothing like a challenge to bring out the best in man."
"Your imagination is your preview of life's coming attractions."
"Real generosity toward the future lies in giving all to the present."
"It is hard to fail, but it is worse never to have tried to succeed."
"Our imagination is the only limit to what we can hope to have in the future."
Charles F. Kettering