The objector says: “Everything is an illusion. Even Brahman the Absolute is an illusion.” Sivananda says: “The snake in the rope is an illusion. But the substratum-rope-is not an illusion. It is a reality. There must be a substratum for this world-illusion. That substratum is Brahman. The denier or the doubter of Brahman exists.
Patience, perseverance and vital will are indispensable for reaching the goal.