The only thing an actor owes his public is not to bore them.
Meaning of the quote
Actors have a responsibility to entertain their audience. They should strive to make their performances interesting and engaging, rather than dull or boring. Brando's quote suggests that the main duty of an actor is to keep the audience interested and entertained, rather than any other expectation. The core idea is that an actor's primary job is to avoid boring the people who come to see their work.

About Marlon Brando
Marlon Brando was an acclaimed American actor and activist who left a lasting impact on the film industry. Known for his method acting approach and iconic roles, Brando won two Academy Awards and was nominated for several more throughout his six-decade career, cementing his status as one of the greatest actors of all time.
More quotes from Marlon Brando
To grasp the full significance of life is the actor’s duty, to interpret it is his problem, and to express it his dedication.
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There’s a line in the picture where he snarls, ‘Nobody tells me what to do.’ That’s exactly how I’ve felt all my life.
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Never confuse the size of your paycheck with the size of your talent.
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The only reason I’m in Hollywood is that I don’t have the moral courage to refuse the money.
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An actor’s a guy who, if you ain’t talking about him, ain’t listening.
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With women, I’ve got a long bamboo pole with a leather loop on the end. I slip the loop around their necks so they can’t get away or come too close. Like catching snakes.
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Privacy is not something that I’m merely entitled to, it’s an absolute prerequisite.
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If you want something from an audience, you give blood to their fantasies. It’s the ultimate hustle.
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I don’t mind that I’m fat. You still get the same money.
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The only thing an actor owes his public is not to bore them.
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Acting is the expression of a neurotic impulse. It’s a bum’s life. Quitting acting, that’s the sign of maturity.
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I have eyes like those of a dead pig.
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If there’s anything unsettling to the stomach, it’s watching actors on television talk about their personal lives.
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An actor is at most a poet and at least an entertainer.
American actor (1924-2004)
If we are not our brother’s keeper, at least let us not be his executioner.
American actor (1924-2004)