John Herschel Quotes about Science
"A Preliminary Discourse on the Study of Natural Philosophy". Book by John Herschel, 1830.
Sir John Frederick William Herschel, William Whewell, George Henry Lewes, Hermann von Helmholz, James Clerk Maxwell (1996). “The Origins of Modern Philosophy of Science, 1830-1914: Preliminary discourse on the study of natural philosophy”
Sir John Frederick William Herschel (1851). “Preliminary discourse on the study of natural philosophy”, p.174