An absolute truth, sometimes called a universal truth, is an unalterable and permanent fact. The concept of absolute truths – what they are and whether they exist – has been debated among many different groups of people. Philosophers have waded in the muck of defining absolute truth for millennia. For example, Plato believed that absolute truth existed, but that truth on earth was merely a shadow of great forms of absolute truth existing in the universe. Alternatively, many believe in relative truths, where facts may vary depending on the circumstances.
It’s difficult to disprove the concept of absolute truth, since saying that there are no absolute truths – that it is absolutely true that no absolute truth exists – is itself an absolute truth. One can say, “From what I know, I believe there are no absolute truths.” Still, this is murky territory.
There are a few things that we all agree are absolutely true, but they depend upon an agreement in definition. Take, for example, the case where a person has a cat in his house. Obviously, no one would agree, as an absolute truth, that this cat, “was the nicest cat in the world.” However, most people would agree, given evidence that at that specific point in time, that there was a cat in the house. Some might quibble over the fact that people might define “cat” differently; that is, some might not describe a lion in a house as “a cat in a house.”