The test of a first-rate intelligence is the ability to hold two opposed ideas in mind at the same time and still retain the ability to function.
“A poem is learned by heart and then not again repeated. We will suppose that after a half year it has been forgotten: no effort of recollection is able to call it back again into consciousness.”
“There is no earthly reason why a solo string instrument or voice, having the possibility to play or sing pure intonation, should want, or try, to be tempered.”