Destroy the roots of the healthiest plants, their heads will droop and die. Many excellent qualities of the mind have their roots, in fact, in the body: their summits, which adorn the spiritual being, the mind, will wither, if we neglect the soil of these valuable plants… – C.G. Salzmann, Gymnastics for Youth: or, A Practical Guide to Healthful and Amus

There is an Indian proverb or axiom that says that everyone is a house with four rooms, a physical, a mental, an emotional and a spiritual. Most of us tend to live in one room most of the time but, unless we go into every room every day, even if only to keep it aired, we are not a complete person. – Rumer Godden, A House with Four Rooms

Hormones, vitamines, stimulants and depressives are oils upon the creaky machinery of life. Principal item, however, is the machinery. – Martin H. Fischer (1879–1962)