50. The third revelation comes at an epoch of emancipation and of intellectual maturity, where developed intelligence cannot agree to play a passive role; where man accepts nothing blindly, but wishes to see where one conducts him; to know the why and the how of everything. It claims to be at the same time the product of a teaching, and the fruit of labor, of research, and of free examination. Spirits teach us only that which is necessary to put us in the way of truth; but they abstain from revealing to man that which he can discover by himself, leaving to him the care of discussing, controlling, and submitting all to the crucible of reason, leaving him often to learn the lesson at his own expense. It gives to him the principal, the materials from which to draw the interest and to put it in use. (See item n°13).