"This is our dilemma - as thinkers we are cut off from what we think about; as tasting, touching, willing, loving, hating, we do not clearly understand. The more lucidly we think, the more we are cut off: the more deeply we enter into reality, the less we can think. You cannot study Pleasure in the moment of the nuptial embrace, nor repentance while repenting, nor analyze the nature of humor while roaring with laughter. But when else can you really know these things?
You cannot hope and also think about hoping at the same moment; for in hope we look to hope’s object and we interrupt this by (so to speak) turning around to look at the hope itself… . Introspection is in one respect misleading. In introspection we try to look inside ourselves and see what is going on. But nearly everything that was going on a moment before is stopped by the very act of our turning to look at it. Unfortunately this does not mean that introspection finds nothing. On the contrary, it finds precisely what is left behind by the suspension of all our normal activities; and what is left behind is mainly mental images and physical sensations. The great error is to mistake this mere sediment or track or by product for the activities themselves."

C.S. Lewis