"I give you three examples: first, medical space research may open up new understanding of man's relation to his environment. Examinations of the astronaut's physical, and mental, and emotional reactions can teach us more about the differences between normal and abnormal, about the causes and effects of disorientation, about changes in metabolism which could result in extending the life span. When you study the effects on our astronauts of exhaust gases which can contaminate their environment, and you seek ways to alter these gases so as to reduce their toxicity, you are working on problems similar to those in our great urban centers which themselves are being corrupted by gases and which must be clear."

“Address to Latin American diplomats at the White House”

“Things don't just happen, they are made to happen.”

“Third, and finally, the educated citizen has an obligation to uphold the law. This is the obligation of every citizen in a free and peaceful society — but the educated citizen has a special responsibility by the virtue of his greater understanding. For whether he has ever studied history or current events, ethics or civics, the rules of a profession or the tools of a trade, he knows that only a respect for the law makes it possible for free men to dwell together in peace and progress.”

“InnerVIEWS with Ernie Manouse: Nelley Connally”

“Everything essential to the security of freedom must be done; and if that should require more men, or more taxes, or more controls, or other new powers, I shall not hesitate to ask them. I realize that no public revenue measure is welcomed by everyone. But I am certain that every American wants to pay his fair share, and not leave the burden of defending freedom entirely to those who bear arms. For we have mortgaged our very future on this defense--and we cannot fail to meet our responsibilities.”

“John F. Kennedy Birthplace National Historic Site”