PHILOSOPHICAL INVESTIGATIONS:
114. (TractatusLogico-Philosophicus, 4.5): ' "The general form of propositions is: This is how things are."——That is the kind of proposition that one repeats to oneself countless times. One thinks that one is tracing the outline of the thing's nature over and over again, and one is merely tracing round the frame through which we look  at it.' (Wittgenstein)