“The word ‘year’ is meaningless as applied to a physical system by itself: it is not the stars or the planets that experience years, still less measure them, but man. This very observation is the result of man’s attention to recurrent movements, seasonable events, biological rhythms, measurable sequences. When the idea of a year is projected back upon the physical universe, it tells something further that is important to man: otherwise, it is a poetic fiction.”
