Truth. The ultimate, absolute truth, can not be explained. It can only be experienced. You can judge your spiritual experience by your emotions. By how you feel.
What you believe true is true, though it may not be the absolute truth. And now realized that there is an absolute truth, that governs everything.
Today we come to know some of these things -- the natural laws: laws of gravity, electro-magnetics, light, sound, and more. And found that if we bend these laws certain adverse effects or conditions happen. So, we learn to abide by the laws and learn how to work with it in harmony, now we have electrical lights, electrical powered engines, ships, and the like. We have improve our probing process and call it science. We have science to help us find more of these laws. By probing with theories and hypothesis to established facts (consideration of truth, until proven otherwise) and used these facts to build our stable data (theorems and axioms and scientific theory or scientific method) to arrived at the absolute truth.
So that we can live in harmony and peacefully with our surroundings. And our progress will be smooth, fast and steady. And we can see today how science has helped us in many ways. It has help us improve our conditions for the better. And more importantly it has helped us realized that facts we consider to be true today may not yet be the absolute truth, no matter how we build and based these truths. (see scientific theory)
Thanks to science we can continue probing our statements of facts (results from scientific studies and the like) till we arrived at the absolute truth. Or discard and continue if necessary; consider this "Science and Scientists".
But the principles that governed us all are still there.
We live day by day blinded by our cares and worries. We consider valuable. We pursue these things by the wisdom we have gained. In the process we discover that somethings we do work and some things do not.
I did not care about such things myself, at one point in time, in my life.
And even if we do not care we always come at a crossroad at some point in our lives and come to a realization that interests, happiness, joy, love, health, peace, harmony, serenity, wealth, enthusiasm can be had or experience by doing certain things in certain ways.
The scientific method is among the greatest achievements of man. And it has clearly served man well. Today we are in the chasm of material things and the spiritual realm and the scientific method is not against or biased method to find answers we can build upon.
Spiritual experience is hard to explain or can not be explained; only experienced. How do you consider what is spiritually true?