Observation Always Involves Theory.

Science Is The One Human Activity That Is Truly Progressive. The Body Of Positive Knowledge Is Transmitted From Generation To Generation.

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.

There We Measure Shadows, And We Search Among Ghostly Errors Of Measurement For Landmarks That Are Scarcely More Substantial.

The Outstanding Feature, However, Is The Possibility That The Velocity-distance Relation May Represent The De Sitter Effect, And Hence That Numerical Data May Be Introduced Into Discussions Of The General Curvature Of Space.

Observation Always Involves Theory.