From The Radiance Sutras...
From The Radiance Sutras (Gateways to the yoga of wonder and delight) #41
Breathing is the flow of the divine,
Where the rhythms of life turn into each other-
The eternal exchange.
Pour one breath into the other,
Outbreath into the inbreath
Into the outbreath.
Awaken to equanimity,
At peace in the play of opposites.