From the Wise Master (April, 2012)

posted May 23, 2015, 4:51 PM by San Jose Scottish Rite   [ updated May 23, 2015, 4:51 PM ]
Jack Harris
The Degree of Rose Croix , like those preceding it, is philosophical.  The end of all philosophy is to free the mind from those encumbrances which hinder its progress toward perfection and to raise it to the contemplation of Immutable Truth and the knowledge of divine and spiritual objects.  This effect must be produced by easy steps, lest the mind, hitherto conversant only with sensible things, should revolt at the change Knight of the Eagle and Pelican is one of the titles applied to a Rose-Croix H-R-D-M Freemason, yet that degree is not strictly an order of knighthood, k in the commonly received sense of the term.
In these degrees, it is readily perceivable that we have now full entered upon a long course of instruction in to all the mysteries of the esoteric doctrine........More next time. 
I decided to define the word “esoteric”  and opened a can-of-worms.  There are many competing definitions and it was difficult to select one, but I think this will come as close as any. 
 es-o-ter-ic  adjective:   
  1. understood by or meant for only the select few, who have special knowledge or interest.
  2. belonging to a select few
  3. private; secret; confidential
  4. ( of a philosophical doctrine or the like) intended to be revealed only to the initiates of a group 
Jack Harris,  Wise Master