From a long view of the history of mankind, seen from, say, ten thousand years from now, there can be little doubt that the most significant event of the 19th century will be judged as Maxwell's discovery of the laws of electrodynamics. The American Civil War will pale into provincial insignificance in comparison with this important scientific event of the same decade.
Richard P. FeynmanAgnostic for me would be trying to weasel out and sound a little nicer than I am about this.
Richard P. FeynmanTo test whether you have learned an idea or a definition, rephrase what you just learned without using the new word.
Richard P. Feynman