“Shlokardhena Prabakhyami Yad Uktam Grantha Kotibhihi.
bramha satyam jagat mithya jivo bramhaiva na aparaha.”

- Shri Adi Shankaracharya

Which essentially means that -

Brahma is real. The world is an illusion. Jeeva is no different from Brahman.

An illusion…