All religions have some truth in them, but none has the whole truth; all are created in time and finally decline and perish. Mahomed himself never pretended that the Koran was the last message of God and there would be no other. God and Truth outlast these religions and manifest themselves anew in whatever way or form the Divine Wisdom chooses.
Sri AurobindoThreefold are those supreme births of this divine force that is in the world, they are true, they are desirable; he moves there wide-overt within the Infinite and shines pure, luminous and fulfilling.... Of that which is in mortal in mortals, and possessed of the truth, is a God and established inwardly as an energy working out in our divine powers.... Become high uplifted, O Strength, pierce all veils, manifest in as the things of the Godhead.
Sri AurobindoThe yoga we practice is not for ourselves alone, but for the Divine; its aim is to work out the will of the Divine in the world, to effect a spiritual transformation and to bring down a divine nature and a divine life into the mental, vital and physical nature and life of humanity. Its object is not personal Mukti, although Mukti is a necessary condition of the yoga, but the liberation and transformation of the human being. It is not personal Ananda, but the bringing down of the divine Ananda - Christ's kingdom of heaven, our Satyayuga - upon the earth.
Sri Aurobindo