In the 8th century Sankara developed Advaita further, arguing that the world is unreal and that the Upanishads teach the nature of Brahman, the only reality.

• 8世纪的印度哲学家商羯罗（Sankara）进一步发挥不二论的论点，认为奥义书（Upanishad）教给人们的是梵（Brahman）的本质，梵是真实的，而世界是虚妄的。任何变化、二元性或多元性都是一种幻觉。