Everything is absolute yet everything changes. The substratum of the universe and its quantity remains the same. In this sense everything is absolute. But yet everything is changing. The permutations and combinations of this base substrata is changing all the time manifesting in the transitory nature of the universe as we perceive. Similarly thinking in humans has two aspects. One aspect of thinking or better said gnosis is absolute and yet the other part is ever changing. This means that the rules that are used by human while thinking are fixed and absolute and yet all these rules can be used in various combinations resulting in the subjectivity in human perception.