Is Pure Consciousness Necessary?

"The objects of knowledge, viz., sound, touch, etc., which are perceived in the waking state, are different from each other because of their peculiarities; but the consciousness of these, which is different from them, does not differ because of its homogeneity." Inspired by this verse from the book, Pancadasi by Vidyaranya (Ch 1, Verse 3), Swami Sarvapriyananda gives a discourse on direct path of Advaita Vedanta.