The conditions of a solitary bird are five: The first, that it flies to the highest point; The Second, that it does not suffer for company, not even of its own kind; The Third, that it aims its beak to the skies; The Fourth, that it does not have a definite color; The Fifth, that it sings very softly.
John of the CrossHowever high be your endeavors, unless you renounce and subjugate your own will - unless you forget yourself and all that pertains to yourself - not one step will you advance on the road to perfection.
John of the CrossHe who interrupts the course of his spiritual exercises and prayer is like a man who allows a bird to escape from his hand; he can hardly catch it again.
John of the CrossAll the powers of soul and body,memory, understanding, and will, interior and exterior senses, thedesires of spirit and of sense, all workin and by love.
John of the Cross