Monad — the One. The threefold spirit on its own plane. In occultism it often means the unified triad—Atma, Buddhi, Manas; Spiritual Will, Intuition and Higher mind,—or the immortal part of man which reincarnates in the lower kingdoms and gradually progresses through them to man and thence to the final goal.
Manas, or Manasic Principle — literally, the Mind, the mental faculty; that which distinguishes man from the mere animal. It is the individualising principle; that which enables man to know that he exists, feels, and knows. It is divided in some schools into two parts, higher or abstract mind, and lower or concrete mind.