From A Chinese Garden of Serenity (1959), by Hung Tzu-ch’eng, translated by Chao Tze-chiang:

When there is no commotion and agitation in a man’s mind, he finds every place as peaceful as a verdant hill or a green tree. When there are transforming and nurturing powers in his nature, he discovers every thing as lively as a leaping fish or a flying hawk.