The paradox of idealism is that if it is true not only is there no value in knowing it to be true - since that would represent a reduction in complexity, a premature foreclosing of the possibility of the fullest grasp of the truth - but if there is any value to be found it is precisely in the sharpest possible experience of the untruth of idealism - since only then would the furthest possibility of experience be achieved. In other words, under idealism all value resides in the reality principle, in precisely what is orthogonal' to mind. This is something like the idea that reality is only in suffering. This would seem to be a gnostic idea - and indeed one version of gnosticism is that it is the logical consequence of the principle that only the knowing realisation of truth matters - but there is a shade of it even in Christianity if you consider the paradigmatic centrality of the crucifixion.