"To one given to day-dreaming, and fond of losing himself in reveries, a sea-voyage is full of subjects for meditation; but then they are the wonders of the deep and of the air, and rather tend to abstract the mind from worldly themes."

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Thus even supposedly unadulterated facts of observation already are interfused with all sorts of conceptual pictures, model concepts, theories or whatever expression you choose. The choice is not whether to remain in the field of data or to theorize; the choice is only between models that are more or less abstract, generalized, near or more remote from direct observation, more or less suitable to represent observed phenomena.

— Ludwig von Bertalanffy