“Everybody needs vitamins A, B, C, D, and E. Vitamins and proteins are available in satvic food. Proteins are in milk, buttermilk, and whole wheat; vegetables contain lot of vitamins. Both Indians and foreigners, due to their habits, take to non-vegetarian foods and also to drinking alcohol, thereby damaging their lives. Health is essential to all human beings. When one is healthy, one can take to spiritual pursuits more easily. All this time we are spoiling our health with our own hands. We should not subscribe to the feeling that people will be happy with only food, shelter, and clothing.”

…Sathya Sai Baba, “Sathya Sai Speaks on Food-from Discourses Spanning the First 81 Years of His Life” Discourse 27 August 1994

“Through seva you realise that all beings are waves of the Ocean of Divinity. No other sadhana can bring you into the incessant contemplation of the oneness of all living beings. You feel another's pain as your own; you share another's success as your own. To see everyone else as yourself and yourself in every one, that is the core of the sadhana of seva. Again, seva makes the ego languish for want of food. It makes you humble before the suffering of others, and when you rush to render help, you do not calculate how high or low his social or economic status is. The hardest heart is slowly softened into the softness of butter by the opportunities that the Seva Dal offers.” 

…Sathya Sai Baba, “No Bumps, No Jumps” Discourse 14 November 1975  

http://www.sssbpt.info/ssspeaks/volume13/sss13-18.pdf