[ar:MP3 同步字幕版(美音)]
[ti:Of Men and Galaxies]
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[00:00.87]Lesson 45
[00:02.87]Of men and galaxies
[00:11.20]What is the most influential factor in any human society?
[00:18.75]In man's early days, competition with other creatures must have been critical.
[00:25.22]But this phase of our development is now finished.
[00:28.88]Indeed, we lack practice and experience nowadays in dealing with primitive conditions.
[00:35.97]I am sure that, without modern weapons,
[00:39.21]I would make a very poor show of disputing the ownership of a cave with a bear, and in this I do not think that I stand alone.
[00:49.65]The last creature to compete with man was the mosquito.
[00:53.96]But even the mosquito has been subdued by attention to drainage and by chemical sprays.
[01:01.53]Competition between ourselves, person against person,
[01:06.13]community against community, still persists, however; and it is as fierce as it ever was.
[01:14.55]But the competition of man against man is not the simple process envisioned in biology.
[01:21.74]It is not a simple competition for a fixed amount of food determined by the physical environment,
[01:28.55]because the environment that determines our evolution is no longer essentially physical.
[01:35.73]Our environment is chiefly conditoned by the things we believe.
[01:41.69]Morocco and California are bits of the Earth in very similar latitudes,