“The most important of my discoveries have been suggested to me by my failures.”

“Life is made up, not of great sacrifices or duties, but of little things, in which smiles and kindness, and small obligations given habitually, are what preserve the heart and secure comfort.”

“Language is not only the vehicle of thought, it is a great and efficient instrument in thinking.”

“In the present state of our knowledge, it would be useless to attempt to speculate on the remote cause of the electrical energy... its relation to chemical affinity is, however, sufficiently evident. May it not be identical with it, and an essential property of matter?”

“The most important of my discoveries have been suggested to me by my failures.”

“Natural science is founded on minute critical views of the general order of events taking place upon our globe, corrected, enlarged, or exalted by experiments, in which the agents concerned are placed under new circumstances, and their diversified properties separately examined. The body of natural science, then, consists of facts; is analogy,—the relation of resemblance of facts by which its different parts are connected, arranged, and employed, either for popular use, or for new speculative improvements.”

“Nothing is so dangerous to the progress of the human mind than to assume that our views of science are ultimate, that there are no mysteries in nature, that our triumphs are complete and that there are no new worlds to conquer.”