"A Master of the Wisdom appears phenomenally to be a human being. He has the physical attributes, functions and habits, and mechanism of the fourth kingdom in nature, but within the form, the consciousness is entirely changed. . . . In the past each great unfoldment of consciousness, has precipitated new forms. This will no longer occur. . . . Under the divine plan for this solar system, this form-differentiation has its limitations, and cannot proceed beyond a certain point. This point was reached in the human kingdom for this world cycle. Now, in the future, the consciousness aspect of Deity will continue to perfect the forms in the fourth kingdom in nature, through the instrumentality of those whose consciousness is that of the fifth kingdom. This is the task of the Hierarchy of Masters. This is the delegated task of the New Group of World Servers who, upon the physical plane, can become the instrument of Their will. Through this group, the inner divine qualities of goodwill, peace and love, can increase and express themselves through human beings, functioning in the forms of the fourth kingdom. (15 - 252/4)."
January 1, 1970
https://en.wikiquote.org/wiki/Masters_of_Wisdom_(Theosophy)