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.

Science is the one human activity that is truly progressive. The body of positive knowledge is transmitted from generation to generation.

All nature is a vast symbolism: Every material fact has sheathed within it a spiritual truth.

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.

I knew that even if I were second or third rate, it was astronomy that mattered.

The great spirals... apparently lie outside our stellar system.

There we measure shadows, and we search among ghostly errors of measurement for landmarks that are scarcely more substantial.