"Man is an intruder in space.
Space is not for man, so man must be fitted for space. You can say
that this is just what aerospace medicine is all about - to save
the lives of the men who climb to the high reaches above the Earth
and beyond this planet." Martin Caidin, Aviation and Space
Medicine, 1962
"Whatever the explanation for the origin of
these excessive short wave radiations (from the sun), their existence
constitutes a major problem of manned rocket flight at highest altitudes."
Heinz Haber, Space Medicine, 1951
