1. The Vedantic sages sought to know the self, to live in it and to be one with it in identity.
2. They came to see that this self in us is one with the universal self of all things and this self again is the same as God or Brahman, a transcendent Being or Existence.
3. The Upanishads are epic hymns of self-knowledge, world-knowledge and God-knowledge.
4. The great formulations of philosophic truths in the Upanishads are not abstract intellectual generalisations that enlighten the mind but are intuitive and revelatory illumination. They are the reaching and seeing of the transcendent Godhead, the universal Self and the relationship of this Self with the things and creatures in this cosmic existence.
5. These hymns take us close to the Ananda of the Divine which comes to us by oneness with the self-existent and universal Spirit.
6. The highest ethics of Buddhism and later Hinduism are emergences from this supreme ideal of spiritual action founded on oneness with God and all living beings.
7. That is why even when the Vedic cult passed away, the Upanishads remained alive and creative and could generate devotional religions and maintain the idea of Dharma.
8. The Upanishads are the creation of an intuitive mind and its illumined experience and all the substance and essence of the texts is stamped with this original character.