 ラッセル関係電子書籍一覧 |
Vitality is rather a physiological than a mental characteristic. it is presumably always present where there is perfect health, but it tends to ebb with advancing years, and gradually dwindles to nothing in old age. .. It heightens pleasures and diminishes pains. It makes it easy to take an interest in whatever occurs, and thus promotes objectivity, which is an essential of sanity. Human beings are prone to become absorbed in themselves, unable to be interested in what they see and hear or in anything outside their own skins.
Source: On Education, 1926, chapter 2.
More info.: https://russell-j.com/beginner/VITALITY.HTM