Where it(vitality) exists, there is pleasure in feeling alive, quite apart from any specific pleasant circumstances. 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.
出典:On Education, especially in early childhood, 1926, chap. 2: The Aims of Education
詳細情報：http://russell-j.com/beginner/OE02-110.HTM
＜寸言＞
活力は「空元気」とは異なる。