TLDR
The screaming and weeping of infants—Forms of features—Age at which weeping commences—The effects of habitual restraint on weeping—Sobbing—Cause of the contraction of the muscles round the eyes during screaming—Cause of the secretion of tears.
In this and the following chapters the expressions exhibited by Man under various states of the mind will be described and explained, as far as lies in my power. My observations will be arranged according to the order which I have found the most convenient; and this will generally lead to opposite emotions and sensations succeeding each other.via the TL;DR App
no story
Written by charlesdarwin | On the Origin of Species By Means of Natural Selection