Answer:
The different philosophical speculations in the early Upanishads have been ascribed to celebrated sages, for example, Yajnavalkya, Uddalaka Aruni, Shvetaketu, Shandilya, Aitareya, Balaki, Pippalada, and Sanatkumara.
Explanation:
the formation of Vedas is credited to Brahma. The Vedic psalms themselves affirm that they were skillfully made by Rishis (sages), after motivated innovativeness, similarly as a woodworker fabricates a chariot. There are four Vedas: the Rigveda, the Yajurveda, the Samaveda and the Atharvaveda. Subsequently it is best to get Bhagavad-Gita first. Read Katha Upanishad first. It grows efficiently the darsana basic Hinduism. Taiteerya Upanishat is instructed first.