Not Until The Empirical Resources Are Exhausted,

At The Last Dim Horizon, We Search Among Ghostly Errors Of Observations For Landmarks That Are Scarcely More Substantial. The Search Will Continue. The Urge Is Older Than History. It Is Not Satisfied And It Will Not Be Oppressed.

We Do Not Know Why We Are Born Into The World, But We Can Try To Find Out What Sort Of A World It Is - At Least In Its Physical Aspects.

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

Past Time Is Finite, Future Time Is Infinite.

All Nature Is A Vast Symbolism: Every Material Fact Has Sheathed Within It A Spiritual Truth.