“Ask not what your country can do for you—ask what you can do for your country.”

“We choose to go to the Moon in this decade and do the other things, not because they are easy, but because they are hard.”

“Those who make peaceful revolution impossible will make violent revolution inevitable.”

“The proletarians have nothing to lose but their chains. They have a world to win.”

“War may sometimes be a necessary evil. But no matter how necessary, it is always an evil, never a good. We will not learn how to live together in peace by killing each other's children.”