笔者从求学经历结合新闻传播史，综述徐佳士教授的毕生贡献：一，他写下华文世界第一本传播理论的教科书，启迪数代学子；二，由于他的引导，笔者有幸结识传播学术界大师和新闻界前辈，以致奠定学术的方向与品味；三，他是台湾新闻专业自主性既坚定又温和的守护者。

This article provides a brief glimpse into media and communication history in the Chinese-speaking world by recalling my lifetime encounter with Professor Hsu Chia-Shih. Professor Hsu as a pioneer wrote the first text on communication theory in Chinese that has inspired succeeding generations of students. Thanks to his guidance I came to know at close range two masters in media research and one distinguished journalist who contributed to the shaping of my career interest and path. Professor Hsu was a strong but gentle guardian of professional autonomy of journalism in Taiwan.