Growing and decaying vegetation in this land are responsible for 93 percent of the oxides of nitrogen.

Mankind's journey into space, like every great voyage of discovery, will become part of our unending journey of liberation. In the limitless reaches of space, we will find liberation from tyranny, from scarcity, from ignorance and from war. We will find the means to protect this Earth and to nurture every human life, and to explore the universe. . . .This is our mission, this is our destiny.

Education is not the means of showing people how to get what they want. Education is an exercise by means of which enough men, it is hoped, will learn to want what is worth having.

Permanent brain damage is one of the inevitable results of the use of marijuana.

Through the history of our nation, Americans have always extended their hands in gestures of assistance.

Because you won't get gun control by disarming law abiding citizens. There's only one way to get real gun control: Disarm the thugs and the criminals, lock them up, and if you don't actually throw away the key, at least lose it for a long time.

Two Soviets . . . were talking to each other. And one of them asked, "What's the difference between the Soviet Constitution and the United States Constitution?" And the other one said, "That's easy. The Soviet Constitution guarantees freedom of speech and freedom of gathering. The American Constitution guarantees freedom after speech and freedom after gathering."