If you are going to fall back into labeling, instead of directly addressing what I’ve said then I am not interested in continuing. You need to explain why it matters necessarily, as opposed to subjectively ( fro some). Relativism is one thing―presuming to speak for others, let alone for all, is another.
I don’t need to add “by the senses or by scientific instruments”, because I am open to any form of reliable detection you might cite. Reason by itself tells us nothing about the world ―it is merely a method that (hopefully) practices consistency of thought. It cannot guarantee its premises and must rely on observation to generate those.
Existential truths are discovered by observation of human life and by reflection on one’s own experience. For me the imagination is paramount, not in delivering propositional truths about the nature of things but in embodying the most beautiful visions. For me music is the paradigmatic art form in that it says nothing about the nature of things at all, and yet it can move us so profoundly.
I’m familiar with the term imaginal. I coined it for myself before I ever encountered it in the writings of Jung. As far as I know Jung saw himself as a scientist and never claimed that the imaginal yielded any universal or absolute truth about the nature of the Cosmos. Of course it, indirectly, yields truths about humanity in that what we can imagine is a great part of what we are.
Spinoza, as a rationalist, believed in the verity of intellectual intuition as guide to the nature of nature. Kant rejected that and then Hegel brought it back (“the Rational is the Real”). I tend to (reservedly) believe in the power of imagination and intuition myself, but I know the veracity of our imaginings cannot be demonstrated to point to any absolute reality, and in any case for me it consists more in the nature of poetic intimations than it is explicitly discursive. Look at continental philosophy―much of it is ineliminably ambiguous, and it is within that ambiguity that the sense of insight lives.
The idea that science demystifies and disenchants our view of nature is itself ambiguous. Looked at one way we can say it does, but from another perspective it re-enchants nature by freeing our view of it from fossilized dogma. It is down to individuals as to whether they are enchanted or disenchanted by science. That is not relativism but is simply an acknowledgement of human diversity, which the dogmatists would so like to eliminate.