1. Who is a fool?

    A sane man, when he’s suffering, he goes to the doctor, physician: “Sir, I am suffering from disease. Give me some medicine.” So he takes medicine. That is sane man. And insane man, he does not go to the physician for treatment. He thinks, “This is natural. What is that?” This is the difference between foolish man and sane man.

    Srila Prabhupada, Srimad-Bhagavatam 1.5.32 — August 13, 1974, Vrndavana