Eternal.

49. When this is gained, there follows the right guidance of the
life-currents, the control of the incoming and outgoing breath.

It is well understood to-day that most of our maladies come from
impure conditions of the blood. It is coming to be understood that
right breathing, right oxygenation, will do very much to keep the
blood clean and pure. Therefore a right knowledge of breathing is a
part of the science of life.

But the deeper meaning is, that the spiritual man, when he has gained
poise through right effort and aspiration, can stand firm, and guide the
currents of his life, both the incoming current of events, and the
outgoing current of his acts.

Exactly the same symbolism is used in the saying: Not that which
goeth into the mouth defileth a man; but that which cometh out of the
mouth, this defileth a man.... Those things which proceed out of the
mouth come forth from the heart . . out of the heart proceed evil
thoughts, murders, uncleanness, thefts, false witness, blasphemies.
Therefore the first step in purification is to keep the Commandments.

50. The life-current is either outward, or inward, or balanced; it ;is
regulated according to place, time, number; it is prolonged and subtle.
The technical, physical side of this has its value. In the breath, there
should be right inbreathing, followed by the period of pause, when the
air comes into contact with the blood, and this again followed by right
outbreathing, even, steady, silent. Further, the lungs should be evenly
filled; many maladies may arise from the neglect and consequent