This is a topic that has been on my mind quite a bit in the past few years. I’ve even started writing a book about it to make the process as simple as possible to understand. In my research, I have found many valuable resources that will be of great help to those folks who really want to understand absolute truth, where it comes from, and what it is.
In the book that I’m working on, the premise is that you cannot arrive at perfect truth through the reasoning of man, even scientific results. The only true source of absolute truth is always the Holy Ghost. If you’re interested in reading the working copy of my book, let me know. I’ll share it with you.
However, the book that you should absolutely study is called “Hearing the Voice of the Lord,” by Gerald N. Lund. If you’d like a panoptic view of what truth is, how to discover it, and how to know it’s the pure truth, this is the book that I’d recommend to everyone. Brother Lund goes through all parts of revelation: what it is, how to recognize it, the myriad ways it can manifest, how to pursue it, what to do once you’ve received it, how to recognize false revelation, and many other aspects of the topic.
Another book that I will be reading soon is called “Who is Truth?” by Jeffrey L. Thayne and Edwin E. Gantt. For some good info on what this is, take a look at the reddit post that originally made me aware of the book’s existence. It can be purchased on amazon, as well (I have no affiliation with these gentlemen, I’m just sharing the info).