A piece-meal Theosophy can no more be considered Theosophy than can a series of disconnected links be regarded as a chain. It is Theosophy as a coherent body of knowledge which has to be tried, and any lesser process is about as judicial as trying the right hand of a thief for larceny. All else must remain a pale hypothesis which would move no sensible man to a change of course. He has to test in making, and make in testing, that path for himself, guided only by the transcendental light which shines through the deep embrasures of the half-revealed doctrine. It is inevitable that those who timorously rely upon the scientific way walk forever on shifting sands.
Physical science is wholly experimental, therefore essentially changeable.
That path may be approached by this, but the leap from one to the other is not made by any amount of treading on the circle of doubt. The weights for the balance are all there. The continued and eternal reassurances of the Masters of Wisdom, Those who fearlessly took that plunge in ages past, are conducive factors, but not moving causes. It is useless to speak to those in whom the leaven of the Hidden Self has not yet worked to the surface of diurnal life. To do so is to court laughter as a foolish dreamer and sentimentalist, or a devotee of blind faith, if not worse.