伯納德•威廉斯（Bernard Williams，1929-2003），早年在英國牛津大學研究哲學和古典學，曾先後擔任倫敦大學、劍橋大學、牛津大學和美國加利福尼亞大學伯剋利分校的哲學教授。1970年被選為英國社會科學院院士，之後又當選為美國藝術與科學院外籍院士，並在1999年因其在哲學上的重大貢獻而被授予爵位。

威廉斯的主要工作領域是倫理學、知識論、心靈哲學和政治哲學。他在早期希臘思想和笛卡兒的研究上建樹卓越，但他最重要的影響是在倫理學方麵。威廉斯對功利主義和康德倫理學的批判，對道德和道德要求的本質的探究，主導瞭近三十年來西方倫理理論的思維，在某種意義上是這一時期最重要的道德哲學傢。

徐嚮東，浙江大學哲學係教授。1986年獲北京大學理學士學位，1989年獲中國社會科學院研究生院哲學碩士學位，2002年獲美國哥倫比亞大學哲學博士學位。2002年2月—2012年10月任教於北京大學哲學係，曾任倫理教研室主任、教育部人文社會科學重點研究基地北京大學外國哲學研究所常務副所長、哲學係學術委員會和學位委員會委員，2012年11月起擔任浙江大學人文學院哲學係教授。

What does it mean to be truthful? What role does truth play in our lives? What do we lose if we reject truthfulness? No philosopher is better suited to answer these questions than Bernard Williams. Writing with his characteristic combination of passion and elegant simplicity, he explores the value of truth and finds it to be both less and more than we might imagine. Modern culture exhibits two attitudes toward truth: suspicion of being deceived (no one wants to be fooled) and skepticism that objective truth exists at all (no one wants to be naive). This tension between a demand for truthfulness and the doubt that there is any truth to be found is not an abstract paradox. It has political consequences and signals a danger that our intellectual activities, particularly in the humanities, may tear themselves to pieces. Williams's approach, in the tradition of Nietzsche's genealogy, blends philosophy, history, and a fictional account of how the human concern with truth might have arisen. Without denying that we should worry about the contingency of much that we take for granted, he defends truth as an intellectual objective and a cultural value. He identifies two basic virtues of truth, Accuracy and Sincerity, the first of which aims at finding out the truth and the second at telling it. He describes different psychological and social forms that these virtues have taken and asks what ideas can make best sense of them today. "Truth and Truthfulness" presents a powerful challenge to the fashionable belief that truth has no value, but equally to the traditional faith that its value guarantees itself. Bernard Williams shows us that when we lose a sense of the value of truth, we lose a lot both politically and personally, and may well lose everything.