A man who has not gained power over his breath is like a king who has no power over his domain. Once man has gained the power of contraction and expansion then what he needs in life is to know what to attract and what to repel, and this the master of breath intuitively understands. Even the birds and animals know what they must eat and drink and what they must not. By a close study of the lower creation students of nature have learned that animals and birds abstain from food and drink when it becomes necessary for health.