The question on salvation with its multifarious dimensions had always been a significant subject-matter of discussion from time immemorial. All the religious traditions attempt to formulate appropriate answers to the questions related to this, one of the most crucial issues in theological reflections. Still the concept remains wide open for further research. It is St. Paul who said that, For now we see in a mirror, dimly, but then we will see face to face. Now I know only in part; then I will know fully, even as I have been fully known. (1 Cor. 13:13) Salvation, as St. Paul conceives it, is a face to face vision of God in perfect knowledge merited through the person of Christ and through the gratuitous gift of grace. It is a passage from ignorance to truth, from darkness to light and from death to immortality (Br. Upa. I. iii. 27). From Darkness to Light aims at an enhanced understanding of the concept of salvation, comparing the theological and soteriological positions of Thomas Aquinas and Sankara. The author has made an admirable attempt in Comparative Theology, deciphering and clarifying all related concepts of salvation in both the thinkers.