When a man literally walks in the light of his soul and the clear light of the sun pours through him—revealing the Path,—it reveals at the same time the Plan.
Simultaneously however, he becomes aware of the fact that the Plan is very far as yet from consummation. The dark becomes more truly apparent; the chaos and misery and failure of the world groups stand revealed; the filth and dust of the warring forces are noted, and the whole sorrow of the world bears down upon the astounded, yet illuminated, aspirant.
Can he stand this pressure? Can he become indeed acquainted with grief and yet rejoice forever in the divine consciousness? Has he the ability to face what the light reveals and still go his way with serenity, sure of the ultimate triumph of good? Will he be overwhelmed by the surface evil and forget the heart of Love which beats behind all outer seeming? This situation should ever be remembered by the disciple, or he will be shattered by that which he has discovered.
But with the advent of the light, he becomes aware of a new (for him) form of energy. He learns to work in a new field of opportunity. The realm of the mind opens up before him, and he discovers that he can differentiate between the emotional nature and the mental. He discovers also that the mind can be made to assume the position of the controller, and that the sentient forces respond with obedience to mental energies.
"The light of reason" brings this about—light that is always present in man but which only becomes significant and potent when seen and known, either phenomenally or intuitionally." - Alice Bailey