We are reaching the stage where the problems we must solve are going to become insoluble without computers. I do not fear computers, I fear the lack of them.

---

There are no nations! There is only humanity. And if we don't come to understand that right soon, there will be no nations, because there will be no humanity.

---

So the universe is not quite as you thought it was. You'd better rearrange your beliefs, then. Because you certainly can't rearrange the universe.

---

The day you stop learning is the day you begin decaying.

---

The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom.

---

Any book worth banning is a book worth reading.

---

There is no belief, however foolish, that will not gather its faithful adherents who will defend it to the death.

---

It is well-known that the friend of a conqueror is but the last victim.

---

People who think they know everything are a great annoyance to those of us who do.

---

Today's science fiction is tomorrow's science fact.

---