"Space can be mapped and crossed and occupied without definable limit; but it can never be conquered. When our race ha…"

"We cannot predict the new forces, powers, and discoveries that will be disclosed to us when we reach the other planet…"

"We still talk in terms of "conquest"-whether it be of the insect world or of the mysterious world of space. We still …"

"The glory of man lies in the fact that he is aware of space, and can imagine this space as the field of divine living…"

"As a solitary planetary system we may be inconspicuous, but so is the individual human. He does not thereby lose his …"

"The impact of space activities is nothing less than the galvanizing of hope and imagination for human life continuum …"

"Manned space flight . . . has opened for us thus far only a tiny door for viewing the awesome reaches of space. Our o…"

"[T]he program which Immanuel Kant proposed back in the 1760s... was this: our knowledge of the outside world depends …"

"Only a few centuries have passed since those pre-Columbian days, yet today our whole earth has become only another sh…"

"Kant's attitude toward Newton's absolute space is somewhat confused. At times he defends the absoluteness... At other…"