From Greek psyche (pskhe) meaning "soul," and Logos, the "principle governing the cosmos," the Word, God. True psychology is "the knowledge of the relationship of the soul with God." Esoteric Psychology is the highest and most potent level of that knowledge, which is "private" and "interior" and is entered into in levels, according to the internal, initiatic process of the seeker.
"We should not mistake the Truth with opinions. Many think that the Truth is this or that, or that the Truth is within this or that book, or within this or that belief or idea, etc. Whosoever wants to experience the Truth should not mistake beliefs, ideas, opinions and theories with that which is the Truth. We must experience the Truth in a direct, practical and real manner; this is only possible in the stillness and silence of the mind, and this is achieved by means of meditation."