Welcome back to you too
I’m not sure of the foundation for philosophy itself, I was just saying that a philosophy that starts with the premise that one cannot trust himself is a philosophy that is self-defeating because the premise itself would be in question.
I usually define “philosophy” as an articulable preference.
What’s your philosophy for eating pizza? Do you start at the center and then eat the crust (or fling the crust back in the box)? Or do you start with the crust and finish with the best part? Whatever your preference, I’m sure you could rationalize why you do it and that would be your philosophy.
What’s your philosophy for brushing your teeth? Do you put the paste on the brush and then wet the brush or the other way around?
Every branch of science starts with a philosophy. The philosophy of mathematics articulates the foundation for the study of mathematics. The philosophy of medicine starts with a framework and foundation on which to build the science.
That’s what philosophy is, but its foundation? I don’t know. It’s just how you’re put together I guess.