I think that space flight is a condition of Nature that comes into effect when an intelligent species reaches the saturation point of its planetary habitat combined with a certain level of technological ability... I think it is a built-in… — Donald A. Wollheim Copy Share Image
Once solved, the severe handicaps imposed on space exploration by the weight and chemical limitations of rockets would no longer apply. The whole timetable of our conquest of the planets in our solar system would be tremendously speeded up, from… — Donald A. Wollheim Copy Share Image
I think that the first men to land on Pluto are going to make some very astonishing discoveries. But I am also sure that… — Donald A. Wollheim Copy Share Image
I think that space flight is a condition of Nature that comes into effect when an intelligent species reaches the saturation point of its… — Donald A. Wollheim Copy Share Image
Once solved, the severe handicaps imposed on space exploration by the weight and chemical limitations of rockets would no longer apply. The whole timetable… — Donald A. Wollheim Copy Share Image
Human nature is violent, argumentative, fallible, and given to endless fantasizing. — Donald A. Wollheim Copy Share Image
The years of space flight since the orbiting of Sputnik I back in 1957 had produced many fascinating results, but they had also brought… — Donald A. Wollheim Copy Share Image
While the circumnavigation of the solar system seems farfetched, it may not be once the problem of effective anti-gravitational control is solved. — Donald A. Wollheim Copy Share Image
