Truth

I have been wondering about the nature of truth. Is "truth" subjective, meaning, can you, the individual believe something is the truth and be right, when we the majority believe something else is the truth?

Does Quantum Mechanics really explain the nature of "truth"?

Or is "thruth" more fundamental than that? Is "truth" so obvious that sometimes people just don't see it? Or could people believe something as "true" and in believing it make it so?

I have my ideas which I will explain in a near future post. But what do you think? Is "truth" subjective? Or are there some "truths" and then some other "truths"? Are there "grey" areas?

I want your input. Please comment.