Truth is something I believe to be altogether objective and subjective at the same time. This may seem at first to be a blatant contradiction, but let me explain.
There exists an ultimate truth in this universe. This is the objective truth, that which cannot be disproven, as it is the embodiment of whatever it is being debated. An example of this would be the statement "We exist." If this were not true, we wouldn't be here to contemplate whether it is or not. This is Truth.
Where then, does truth become subjective? In most everything else, I would answer. The subjective truth is a product of one's perspective. A product of what one sees, feels, hears, smells, tastes, and understands. It is easy to understand perspective in a spatial sense, but what does it mean when I say that it is a product of one's understanding? For one, perspective of understanding is not opinion. Opinion is something to be had when truth isn't relevant, such as when I say "Opeth's third album was their best one." In the debate about which Opeth album is the best, it comes down to personal preference; there is no truth, therefore the notion of truth is irrelevant.
Perspective is something you hold to be true, but really might not be on the larger scale of things. For instance, the classical mechanics of motion were once considered to be Truth, but when Einstein proposed his theories of special and general relativity, it became evident that the laws guiding classical mechanics were really simplified approximations of those in relativity. My point here is the things you may consider to be true are not in fact Truth. Another perspective may fall upon your mind that forces you to change what you believe about the world.
I plan on expanding on this topic much more, but I need to get some things straightened out first, as even this short bit turned out to be quite difficult to write down in a manner I feel comfortable I won't be misunderstood.
Also, April 17th is Record Store Day, so go out and support a local independent business in celebration, I will be (which also means a new rip will likely be posted soon).