"Don’t let yesterday take up too much of today."

"You are never too old to set another goal, or to dream a new dream."

"The only limit to our realization of tomorrow will be our doubts of today."

"Failure is simply the opportunity to begin again, this time more intelligently."

"We may encounter many defeats but we must not be defeated."

"The pessimist sees the difficulty in every opportunity. The optimist sees opportunity in every difficulty."