Observation Always Involves Theory.

The Great Spirals, With Their Enormous Radial Velocities And Insensible Proper Motions, Apparently Lie Outside Our Solar System.

Science Is The One Human Activity That Is Totally Progressive.

Past Time Is Finite, Future Time Is Infinite.

I Knew That Even If I Were Second Or Third Rate, It Was Astronomy That Mattered.

Observations Always Involve Theory.