Enrico Caruso, Caruso and Tetrazzini on the Art of Singing
“ If the singer gives much of himself as well as of his voice to the public he should still hold his breathing supply in, so to speak, as he would guard the capital from which comes his income. Failure should thus be impossible if there is always a reserve to draw on. So the more one sings with good breath support the more beautiful the voice becomes. On the other hand, those who sing haphazard sometimes begin the evening well, but deteriorate more and more as the performance advances and at the end are uttering mere raucous sounds. ”
