I always end up remembering the quote attributed to Gustave Flaubert:

There is no truth. There is only perception.

Not, of course, to be confused with facts.

"It is 20 degrees today" might be a fact.

Bob says "It's warm today!" and Susan says "It's a bit chilly today!" and both might be speaking "truth," as coming from their perception of reality.

It all definitely becomes a deep dive in no time at all!