It ought to be admitted that some performances are considered so essentially noble as to justify the sacrifice of everything else on their behalf. The man who loses his life in the defence of his country is not blamed if thereby his wife and children are left penniless. The man who is engaged in experiments with a view to some great scientific discovery or invention is not blamed afterwards for the poverty that he has made his family endure, provided that his efforts are crowned with ultimate success. If, however, he never succeeds in making the discovery or the invention that he was attempting, public opinion condemns him as a crank, which seems unfair, since no one in such an enterprise can be sure of success in advance. – Bertrand Russell