If you look into eastern philosophies, you'll find an interesting concept: that there is in fact no objective truth that can be expressed.
This is subtly different from a relativistic argument, though. The idea is, we can only express thoughts, ideas, etc, in terms of words and concepts that are products of our minds. And those products of our minds are intrinsically personal. Even with mundane things like tables or hoovers we might disagree on the meaning of words. Society teaches us to have more or less the same meanings so we can communicate, but those are intrinsically relative.
So then, there may well be an underlying, intrinsically "absolutely true" reality (in fact, there almost certainly is), but any attempt to express it results in a statement of relative truth.