“Truth” may strike us a loaded term because we often use it as an evaluative term: a truthful person, a true doctrine, higher truth and so on. It may seem to some that “truth,” like “beauty,” is in the eye of the beholder. What you see as a “higher truth” or a “deeper truth” about human existence I may regard as mere confusion and mystical fluff.
Speculative, philosophical theories sometimes purport to define “truth” in all-comprehensive, metaphysical ways. This should certainly trigger our skeptical sensors.