The eye sees only what the mind is prepared to comprehend.
Fortunately, some are born with spiritual immune systems that sooner or later give rejection to the illusory worldview grafted upon them from birth through social conditioning. They begin sensing that something is amiss, and start looking for answers. Inner knowledge and anomalous outer experiences show them a side of reality others are oblivious to, and so begins their journey of awakening. Each step of the journey is made by following the heart instead of following the crowd and by choosing knowledge over the veils of ignorance.
