The Age for Starting
It is my opinion that no girl who wishes to keep her voice in the prime of condition all the time in after years should start to study much earlier than seventeen or eighteen years of age. In the case of a man I do not believe that he should start until he is past twenty or even twenty-two. I know that this is contrary to what many singers think, but the period of mutation in both sexes is a much slower process than most teachers realize, and I have given this matter a great deal of serious thought.