From The Way of Contentment (17th century, translated by Ken Hoshino in 1913), by Kaibara Ekken.

There is a happiness called pure happiness, and it is enjoyed by him who has neither too much nor too little. Though he is not recognised by the world and possesses neither position nor wealth, yet he enjoys his peace of mind and leisure hours. He lives in a house which is sufficient to protect him from wind and rain. He wears cotton cloth, and enjoys simple vegetable food. He reads books quietly, and enjoys poetry. To follow the teaching of the Sages is his delight, to see and feel the beauty of Nature his joy. Friends he has also who share with him this pure and simple pleasure in life.