Existence is infinite. Therefore, to any given question there are a myriad of possible answers/definitions. There is never just one correct and only answer, they are all transitory truths, like steps we are treading on towards new questions and possible answers thereto, which we encounter along our path in the desire to gain a deeper understanding of our selves, aspects of our lives and existence as a whole.
The degree of truth is defined by how much we gain from them in terms of a wider perspective and deeper understanding of what we were trying to know/understand. Also, the answers and definitions we arrive at should inspire us to move yet further into the mystery of our selves/our existence/being as a whole.