Helena Roerich on Pranayama

“Do not exaggerate the significance of pranayama. The science of breathing practised by true Raja Yogis has little in common with ordinary pranayama! The Hatha Yogis are interested only in the control of the vital breathing of the lungs, whereas the ancient Raja Yogis looked upon pranayama as a mental breathing. Verily, only the mastery of this mental breathing brings the highest clairvoyance, restoring the function of the third eye and leading to the true achievements of Raja Yoga.”

“And now, I would like to warn you against psychism, as this condition is especially dangerous on the first steps of discipleship. Psychics have contact with the lower spheres of the Subtle World, and often they mistake the voices of entities from these spheres for the true Call and the Voice of the Great Teachers whom these entities are trying to impersonate. It is a mistake to think that these voices will always suggest evil acts, depravity, or crime. Only the most primitive and low forces act in this way. Much more dangerous are those who approach under the mask of the Teaching of Light. We know many cases of such "guiding" voices and "luminous" visions. Therefore, the Teachers always warn against psychism, which can be acquired by those who practise pranayama.”

“It is much easier for people to give up certain excesses and to perform mechanically a pranayama than to restrain a single habit which is a stumbling block on the path of spiritual progress. But, as it is said, everything mechanical concerns only the outer man and cannot reorganize the inner man, and therefore is worthless; for the transformation of the inner man is the only aim of all true Teachings. Therefore, one must clearly remember that all the Great Teachers care for and deal only with the inner man, whose sphere lies in the realm of thought. Thus, not a single high Raja Yogi or Agni Yogi needs any mechanical or physical exercises. The only concentration allowed by them is concentration on the chosen High Ideal, performed with an unfailing and continual determination to reach it...”