When the mind of man is unattached to the ups and downs of life, but is able to maintain equanimity under all circumstances, good physical health will be assured. Illness is caused more by malnutrition of the mind than of the body. Doctors speak of vitamin deficiency; I will call it the deficiency of "Vitamin G", and I will recommend the repetition of the Name of God,  contemplation of the Glory and Grace of God. That is the "Vitamin G" medicine. Medicine for ill-health is one third of the treatment.  Regulated life and good habits are two-thirds.

- Divine Discourse, May 17, 1965.

There is no austerity in this world, higher than fortitude. - Baba