“Since an ordinary living being is materially contaminated, his words and intelligence are also material. Therefore he cannot ascertain the Supreme Personality of Godhead by manipulating his material senses. The conception of God derived through the material senses is inaccurate because the Supreme Lord is beyond the material senses, but when one engages his senses in devotional service, the eternal Supreme Personality of Godhead is revealed on the platform of the soul. When that Supreme Godhead becomes the aim of one’s life, one is said to have attained spiritual knowledge.