John F. Kennedy

"The greater our knowledge increases the more our ignorance unfolds."

"The greater our knowledge increases the more our ignorance unfolds."

"Change is the law of life. And those who look only to the past or present are certain to miss the future."

"Those who dare to fail miserably can achieve greatly."

"I look forward to a great future for America - a future in which our country will match its military strength with our moral restraint, its wealth with our wisdom, its power with our purpose."

"Let us resolve to be masters, not the victims, of our history, controlling our own destiny without giving way to blind suspicions and emotions."

"The time to repair the roof is when the sun is shining."

"When written in Chinese, the word 'crisis' is composed of two characters. One represents danger and the other represents opportunity."