Philosophus is from a Latin word meaning, "Philosopher."
The initiation for this degree is the conquering of your lower natures (uncontrolled emotions, passions, and instincts) in order to experience a higher nature (the lower forms all calmly subdued by the mind).
In Hermeticism and Spiritual Alchemy, the work of this degree corresponds to the step of Conjunction.
In the Kabala, this corresponds to the sphere of Netzach on the Tree of Life.
In the Egyptian Mystery Tradition, this degree equates with Tep Aau, a Master of the Hands.
In Druidism, this degree equates with Bard.
On the level of Practical Magick, the individual must learn to control the element of Earth and work on developing a personal World View or Belief System. The individual must possess Self Control, which is control of themselves and all their actions.