The view that the spirit of adventure no longer has any scope for its enterprise seems, at first glance, depressingly true. The highest mountains have been scaled; the deepest seas plumbed. Maps today no longer contain huge blanks marked "Unknown Territory", nor do they make random guesses at the shapes of     1     land-masses. All major journeys of exploration to     2     the true shape and nature of the globe have been made in the past. It was left to us to fill in the details with     3     which once would have been considered impossible. The gaps have been     4    . What next?

Astronauts have successfully landed on the moon and its entire surface has been photographed. The information that satellites may provide fueling stations for manned rockets no longer strikes us as preposterous. If thirty years ago, a scientist has urged that we send messages into outer space in the hope of receiving an answer, he would have been regarded as either irresponsible or mad. Now, anything seems     6    .

From dreams like these, we return to earth with a bump. Trips into space are all very well, but they are not for us; we must     7     ourselves with our own, much-traveled world. The earth itself is the training-ground for adventurous spirits, for "adventure" need not mean the seeking out of something new. A person can be called adventurous when he finds out something for himself, and it does not matter how many times the discovery has been made before. No one would say that men who set out now to cross the forbidding Antarctic are less enterprising than their predecessors who tried to do the same thing. The little boy who climbs the small hill that     8     his town, or even he who tries to climbs and fails, has precisely the same spirit that led Hillary to climb Everest. For the bold spirit and inquiring mind, there are inexhaustible possibilities. So long as there are people willing to     9     places that are well-known, there will be those who will, one day, set foot on remote and     10     shores.