In the Vedas it is stated that simply by understanding Krishna, one understands everything. This means there are two departmental educational policy; one departmental education is spiritual education, and the other departmental educational system is material education. One who is highly elevated in material education, cannot understand about anything spiritual. But one who is elevated highly in his spiritual education can understand anything material. In other words, all material things are dependent on the spiritual soul.
Letter to Syama dasi, 11 September, 1968