Sextus, Nāgārjuna and Wang Chong within about a century: one sceptical moment, or three projects?
Between treks I read about the history of philosophy, and I came across a striking claim: that in roughly a century or so, around the second century CE, three traditions with no documented contact each produced a great critic of confident assertion. Sextus Empiricus in the Mediterranean, collecting the modes of Pyrrhonian doubt. Nāgārjuna in India, showing that every position about how things arise undermines itself. Wang Chong in China, a little earlier, attacking the portents and cosmic correspondences that Han scholars used to read Heaven's will.
My Madhyamaka teacher in Manang used to say Nāgārjuna was "not a sceptic but a doctor": he wanted to cure people of clinging to views, not to leave them in doubt. In the Vigrahavyāvartanī Nāgārjuna famously says that if he had a thesis, the fault would be his, but he has none. Sextus, I read, also said his aim was tranquillity, which comes after suspending judgement.
So I wonder if the parallel is real or a trick of the timeline. Sextus and Nāgārjuna both seem to use argument to dissolve belief for the sake of peace. Wang Chong seems different: he wanted better beliefs, based on evidence, not fewer beliefs.
Is it fair to call this a single "sceptical moment"? Or are these three quite different projects that only look alike from a distance, like three mountains that line up from one valley and nowhere else?