The conductor Stowkoski was always in complete control of his orchestra:
He never lost his tempoer with the orchestra, never raised his voice. On the contary, he would lower his voice for a subtle rebuke or a sarcastic comment.
Schwar recalled Stokowski saying, “Second clarinet, don’t play notes – sing them.” To the first violist, he said, “Make up your mind. Either you must ask the orchestra to tune to your A or you must learn to play in tune with theirs. You are always sharp. Not your mind – just your intonation!”
“I’ll try to do it your way,” said a cellist after Stokowski had made a suggestion. “Don’t do anything for me,” Stokowski answered. “Do it for the music. That’s what I’m doing it for.”
Source: Chasins, Abram (1979) Leopold Stokowski: A Profile. London: Robert Hale, p.72.