Complex sentence: Hilbert once remarked that instead of points, lines and planes one might just as well talk of tables, chairs and beer mugs, his point being that the primitive terms are just empty shells, place holders if you will, and have no intrinsic properties.
Split into simpler sentences: Hilbert once remarked that instead of points, lines and planes one might just as well talk of tables, chairs and beer mugs. His point being that the primitive terms are just empty shells, place holders if you will, and have no intrinsic properties.