[grondilu]

Also Democritus:

"By convention sweet is sweet, bitter is bitter, hot is hot, cold is cold, color is color; but in truth there are only atoms and the void."

or:

"We know nothing accurately in reality, but [only] as it changes according to the bodily condition, and the constitution of those things that flow upon [the body] and impinge upon it."

https://en.wikiquote.org/wiki/Democritus

[dTal]

Pretty heady, enlightened stuff for 2400 years ago.