God is directly perceived by the mind, but not by this ordinary mind. It is the pure mind that perceives God, and at that time this ordinary mind does not function. A mind that has the slightest trace of attachment to the world cannot be called pure. When all the impurities of the mind are removed, you may call that mind Pure Mind or Pure Ātman.

p. 68 - The Gospel of Sri Ramakrishna (1942)