Three types of strength are given to a person; physical strength, mental strength and the power of money. It has been said that all these should be offered as yajna (sacrifice). This sacrifice is not offered to God. God, who has given you the body and the mind, does not need them for himself. God is also the source of all wealth. What does He want with your wealth? Use it for sacred purposes. The seva programme is intended only to provide you with opportunities to make your lives sacred and worthwhile. It is to develop the spirit of sacrifice. (SSS Vol.17, p. 111)