The basis of truth is perduring consciousness or attention at an object, and the asserting that the residual perceptual presence that lingers from the moment before shares identity with the solidly vivid sense perception in the live moment.

“That past sensum” “is [of] the same ___” “as this one.”

The pure lingering, as Hume might have it, is the real material that our bad inference engine hypostasizes as substance.

The “inner striving” which for Aristotle defines substance is just the accusative flip-side of the perduring of intentionality that strives to find the substantial thing, the potential threat, the stable food locus, “in space,” which means also in distance-motion and derivatively in time, from the onslaught of photonic and other material bombardment.

Find the thing in the sensational incoming that is agentive. Passing orange and green pixels are the strict empirical facts, but an epistemic attitude arises that is vigilant to find a substantial tiger crouching behind a bush.