Depend upon it there comes a time when for every addition of knowledge you forget something that you knew before. It is of the highest importance, therefore, not to have useless facts elbowing out the useful ones. – Arthur Conan Doyle

Perhaps the prevalence of pedantry may be largely accounted for by the common error of thinking that, because useful knowledge should be remembered, any kind of knowledge that is at all worth learning should be remembered too. – Albert J. Nock

Life has obliged him to remember so much useful knowledge that he has lost not only his history, but his whole original cargo of useless knowledge history, languages, literatures, the higher mathematics, or what you will – are all gone. – Albert J. Nock