55% sureLots of sources credit Leopold Stokowski with this, and they agree with each other. The book or the speech it first came from hasn't turned up yet.
What turned up
Address at Carnegie Hall as reported in The New York Times, May 11, 1967 — a news report of the speech, not a primary transcript; held at likely per the house news-tier precedent.
Occasion
1967 · Carnegie Hall, New York · address to an audience
Sources checked
en.wikiquote.orgChecked using claude-fable-5, 21 August 2026Sourced section citing the NYT report (May 11, 1967) of his Carnegie Hall address
Nothing made from these words yet — Storyfaire is where they get made.