QUACKS: LACK GOD-KNOWLEDGE
If a shopkeeper has sugar in store, he will at once supply the same. The self-styled saints cannot bestow God-knowledge, because they themselves lack this boon.

QUACKS: RENUNCIATION
Those, who preach asceticism and renunciation of hearth and home of God-realisation are mere quacks, who advise amputation of a limb even for a little pain.