"Chemistry cannot be purchased."

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We were brought up in the school that teaches: You do what the script tells you. Deliver the goods without comment. Live it-do it-or shut up. After all, the writer is what's important. If the script is good and you don't get in its way, it will come off okay. I never discussed a script with Spence [Spencer Tracy]; we just did it. The same with Hank [Henry Fonda] in On Golden Pond. Naturally and unconsciously we joined into what I call a musical necessity-the chemistry that brings out the essence of the characters and the work.

— Katharine Hepburn