William p alston formulates and defends a realist conception of truth which he calls alethic realism from aletheia greek for truth this idea holds that the truth value of a statement belief or proposition depends on whether what the statement is about is as the statement says it is. William p alston formulates and defends a realist conception of truth which he calls alethic realism from aletheia greek for truth this idea holds that the truth value of a statement belief or proposition depends on whether what one of the most important anglo american philosophers of our time here joins the current philosophical debate about the nature of truth. One of the most important anglo american philosophers of our time here joins the current philosophical debate about the nature of truth william p alston formulates and defends a realist conception of truth which he calls alethic realism from aletheia greek for truththis idea holds that the truth value of a statement belief or proposition depends on whether what the statement is about . William p alston formulates and defends a realist conception of truth which he calls alethic realism from aletheia greek for truth this idea holds that the truth value of a statement