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.

From The Serpent and the Wave: A Guide to Movement Meditation (1995), by Jalaja Bonheim.

To rebalance ourselves, we must consciously search out empty places. Spend some time in the desert or by the ocean. Lie down on a hillside and gaze into the sky, or into the infinity of a starlit night. Create an empty, uncluttered, yet beautiful space in your home–a room with white walls, a simple seat, and perhaps a flower, or a candle. Dare to spend more time alone, granting yourself moments of nothingness–of sitting quietly, breathing, just being. Such spaces of simplicity and non-doing are healing medicine. In the same way, the most healing movements are empty ones, free of intention and purpose. Like the wind, like the falling of snowflakes, they simply are. We need open spaces inside us. We should take care not to obliterate such spaces, for they are like the stained glass windows in a cathedral, letting in the sunlight.