"The world's most deadly disease is "hardening of the attitudes.""
— Zig Ziglar

January 1, 1970

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Non-fiction authors from the United StatesUnited States Navy peopleOrators from the United StatesMotivational authorsTheologians from Alabama
Original Language: English

Sources

As quoted in Secrets of Superstar Speakers: Wisdom from the Greatest Motivators of Our Time (2000) by Lilly Walters, p. 96