“There are so many departments of knowledge all over the world and many huge universities, but there is, unfortunately, no university or educational institution where the science of the spirit soul is instructed. Yet the soul is the most important part of the body; without the presence of the soul, the body has no value.” 
“Krishna is complete, and the knowledge that comes from Krishna is also complete. If Arjuna receives this knowledge and we receive it from Arjuna as it was spoken to him, then we also receive complete knowledge.” 
– His Divine Grace A.C. Bhaktivedanta Swami Prabhupada