Mysticism has been in the past and probably ever will be one of the great powers of the world, and it is bad scholarship to pretend the contrary. You may argue against it but you should no more treat it with disrespect than a perfectly cultivated writer would treat (say) the Catholic Church or the Church of Luther no matter how much he disliked them.
William Butler YeatsNor law, nor duty bade me fight, Nor public men, nor cheering crowds, A lonely impulse of delight Drove to this tumult in the clouds.
William Butler Yeats