"'Adlestrop' must be one of the finest accounts of that sort of mystic experience we all have now and then, the feeling that there is a sort of profound thought somewhere just beyond where our mind can reach, if only we could just think what it was."

Very true - whenever it happens I always think that Wordsworth sums it up.

                               "And I have felt
      A presence that disturbs me with the joy
      Of elevated thoughts; a sense sublime
      Of something far more deeply interfused,
      Whose dwelling is the light of setting suns"