Every man should recognize that the body has been given to him to render service to others. You must use the body for promoting the welfare of society. Of what use is the endless study of books if you do not use your knowledge for the good of others? A mind that is not utilized for imparting joy to others or a body that is not used for the service of others is totally useless. The way to love God is to love all and serve all.
(SSS Vol XXX – Chap 2)