Nāgārjuna took a core Buddhist insight and pressed it to its philosophical limit. The Buddha had taught dependent origination — that things arise in dependence on causes and conditions. Nāgārjuna asked what this implies about the nature of anything at all, and reached a startling conclusion: if everything depends on other things, then nothing possesses an inherent, independent existence of its own. This is śūnyatā, emptiness, and it applies to everything without exception.
It is easy to misread emptiness as a bleak claim that nothing is real. Nāgārjuna is careful to block that reading. Emptiness does not mean things do not exist; it means they do not exist independently or intrinsically. The cup on your table is perfectly real as a cup — but it is real only as a dependent, conditioned, relational thing, not as a self-contained essence. To see this clearly, he argued, is to see the Middle Way between the extreme of saying things exist absolutely and the extreme of saying they do not exist at all.
The two truthsEmptiness of emptiness.
To hold all this together, Nāgārjuna distinguished two truths. Conventionally, things exist and function perfectly well — we can speak of tables, people, and actions. Ultimately, none of them has independent essence; all are empty. These are not two separate realities but two ways of understanding one reality, and wisdom lies in grasping both at once. His most radical move is to insist that emptiness itself is empty: it is not some deeper foundation underneath appearances, just the ongoing absence of independent essence, which would be a subtle new form of clinging if taken as an absolute.
This philosophy has enormous practical stakes for Buddhism. Suffering, on this view, is bound up with the false belief that we and the things we crave are solid, independent entities. Seeing emptiness loosens that grip, undercutting the craving and clinging the Buddha identified as the root of suffering. Nāgārjuna's thought, preserved in works like his foundational verses on the Middle Way, became central to much of Mahāyāna Buddhism and continues to fascinate philosophers for its rigorous, almost paradoxical, analysis of existence itself.