1. Caitanya Mahaprabhu — always mad after Krsna

    We can always live in Vrndavana, in Vaikuntha, if we are mad after Krsna. This is the teaching of Caitanya Mahaprabhu, and He illustrated this by His very life. When He was in Jagannatha Puri, He was always mad after Krsna day and night. The last twelve years of His life were passed in madness. Sometimes He threw Himself into the ocean, and He wandered about like a madman. Of course, this is not possible for ordinary living entities.

    From Teachings of Lord Kapila by Srila Prabhupada