All fanaticism is false, because it is a contradiction of the very nature of God and of Truth. Truth cannot be shut up in a single book, Bible or Veda or Koran, or in a single religion. The Divine Being is eternal and universal and infinite and cannot be the sole property of the Mussulmans or of the Semitic religions only, - those that happened to be in a line from the Bible and to have Jewish or Arabian prophets for their founders.
Thus to act under the guidance coming from above, this is one side of the sadhana, the dynamic side. The other one is the discrimination between the Purusha and the Prakriti. The Purusha will calmly observe, give sanction, choose, but will realise that all this does not belong to him - all these are outside him. This is the static side of the sadhana. These two aspects constitute the basis of Yoga.
What do you want to do sadhana for? The aim should not be the satisfaction of egoism: "I want to be a great yogi; I shall have so much power and with that power I shall establish myself in the world." All such thoughts must be thrown far away.
The yogin becomes aware in part of the action of the supramental power organizing the lower vehicle (ādhāra). A part of it remains behind the veil and prepares itself.
The seers of ancient India had, in their experiments and efforts at spiritual training and the conquest of the body, perfected a discovery which in its importance to the future of human knowledge dwarfs the divinations of Newton and Galileo , even the discovery of the inductive and experimental method in Science was not more momentous.
Be conscious first of thyself within, then think and act. All living thought is a world in preparation; all real act is a thought manifested. The material world exists because an idea began to play in divine self–consciousness.
A thought is an arrow shot at the truth; it can hit a point, but not cover the whole target. But the archer is too well satisfied with his success to ask anything farther.
The Force which has to be called down from above must be pure and quiet because there are all kinds of forces - it will not do to call them all. And one must have sincerity.
Safety lies in tending towards our highest and not in resting content with an inferior potentiality..... To rest in or follow after an inferior potentiality may seem safe, rational, comfortable, easy, but it ends badly, in some futility or in a mere circling down the abyss or in a stagnant morass. Our right and natural road is towards the summits.
You carry in yourself all the obstacles necessary to make your realization perfect. If you discover a very black hole, a thick shadow, be sure there is somewhere in you a great light. It is up to you to know how to use the one to realize the other.
Your mind has some clearness and capacity for right thinking; it opens towards the heights, but for its own sake, - to receive light from above for its own activity.