Oliver Wendell Holmes
Oliver Wendell Holmes was an American physician, poet, and essayist, known for his contributions to literature and medicine in the 19th century.
"You commit a sin of omission if you do not utilize all the power that is within you. All men have claims on man and to the man with special talents this is a very special claim. It is required that a man take part in the actions and clashes of his time than the peril of being judged not to have lived at all."