We dont say that scientific knowledge is worthless.mechanism,negatron,this is also noesis.But the principal point is atma jnana?self noesis,knowledge of the soul.In these thirty unrivalled essays,talks,and informal conversations,His Divine taste A.C.Bhaktivedanta Swami Prabhupada reveals the central point of essential self noesis,a knowledge that makes all other knowledge and activities pale in equivalence.Brighten your life with the light of self knowledge and gain a world perspective unremarkably reserved for ascetics and saints