Never understood what people really mean by that.
I only try to accumulate knowledge to understand better the world in which I live. That by itself makes me happy and satisfied. Favorite subjects are: evolutionary biology and all the facets of human history.
If what you mean by "the truth" Is some sort of "true religion", the answer is a resounding NO, I never even started looking for it. As far as my early teens, I stopped believing in silent, invisible things, unless it is gases, magnetic forces and gravity.