Will, knowledge and love are the three divine powers in human nature and the life of man, and they point to the three paths by which the human soul rises to the divine. The integrality of them, the union of man with God in all the three, must therefore, as we have seen, be the foundation of an integral Yoga.

Action is the first power of life. Nature begins with force and its works which, once conscious in man, become will and its achievements; therefore it is that by turning his action Godwards the life of man best and most surely begins to become divine. It is the door of first access, the starting-point of the initiation. When the will in him is made one with the divine will and the whole action of the being proceeds from the Divine and is directed towards the Divine, the union in works is perfectly accomplished. But works fulfil themselves in knowledge; all the totality of works, says the Gita, finds its rounded culmination in knowledge, sarvam karmãkhilam jñãne parisamãpyate. By union in will and works we become one in the omnipresent conscious being from whom all our will and works have their rise and draw their power and in whom they fulfil the round of their energies. And the crown of this union is love; for love is the delight of conscious union with the Being in whom we live, act and move, by whom we exist, for whom alone we learn in the end to act and to be. That is the trinity of our powers.

Knowledge is the foundation of a constant living in the Divine. For consciousness is the foundation of all living and being, and knowledge is the action of the consciousness, the light by which it knows itself and its realities, the power by which, starting from action, we are able to hold the inner results of thought and act in a firm growth of our conscious being until it accomplishes itself, by union, in the infinity of the divine being.

An excerpt from The Yoga of Divine Love by Shri Aurobindo