To give due place to passionate love should be therefore a matter which concerns the sociologist, since, if they miss this experience, men and women cannot attain their full stature, and cannot feel towards the rest of the world that kind of generous warmth without which their social activities are pretty sure to be harmful.
Source: Marriage and Morals, 1929, by Bertrand Russell
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https://russell-j.com/beginner/MM09-060.HTM