The goal of philosophy is to explore truth, if not discover it.

Philosophy is basically how a person thinks about truth.  Truth is not an actual concrete existence.  It varies based on the individual’s sense of reality.  Therefore, when a person discovers the truth, what the person is actually doing is coming to his or her own unique sense of truth, or accepting another’s.

Truth is one of the central subjects in philosophy. It is also one of the largest. Truth has been a topic of discussion in its own right for thousands of years. Moreover, a huge variety of issues in philosophy relate to truth… (Stanford)

No one philosopher has a monopoly on truth.  Perceptions of truth also vary with one’s culture and time period.  However, truth is not linked to time.  We still explore the theories of Socrates and Plato, even though they lived in a very different world.

The problem of truth is in a way easy to state: what truths are, and what (if anything) makes them true. But this simple statement masks a great deal of controversy.  (Stanford)

There is as much discussion about the goal of philosophy as there is the idea of truth.  Philosophers are seeking to understand and describe the world they live in.  Chances are, we as humans will never settle on a solid agreement of either.