How long it will take until we get to a Golden Age where everybody's perfectly in tune with God's will, I don't know; but because of Prabhupada, Krishna consciousness has certainly spread more in the last sixteen years than it has since the sixteenth century, since the time of Lord Caitanya. The mantra has spread more quickly and the movement's gotten bigger and bigger.
Through all ages, great saints have remained as living proof that this non-temporary, permanent state of God consciousness can be revived in all living souls.