"A person who never made a mistake never tried anything new."

"Believe you can and you're halfway there."

"The best time to plant a tree was 20 years ago. The second best time is now."

"Your limitation—it's only your imagination."

"Hardships often prepare ordinary people for an extraordinary destiny."

"It does not matter how slowly you go as long as you do not stop."

"I find that the harder I work, the more luck I seem to have."

"Don't watch the clock; do what it does. Keep going."