Ecstasy results from the wisdom of emptiness, of seeing the impermanent, insubstantial nature of all phenomena, where there is no clinging, no attachment, and no fear. In this experience, we become one with the unfolding process of life. This oneness is quite subtle, because it is the oneness of becoming zero.
A saint is a person who practices the keystone human virtue of humility. Humility in the face of wealth and plenty, humility in the face of hatred and violence, humility in the face of strength, humility in the face of your own genius or lack of it, humility in the face of another's humility, humility in the face of love and beauty, humility in the face of pain and death. Saints are driven to humbling themselves before all the splendor and horror of the world because they perceive there to be something divine in it pulsing and alive beneath the hard dead surface of material things -- greater and purer than they are.