以下为视频寄语文稿：

大家好，我是托马斯·萨金特，一名经济学家。在此，我想衷心感谢中国商务部与中国人民大学（这所杰出的学府）邀请我参加第八届虹桥国际经济论坛。我的英语口语可能不够标准，中文更是生疏，对此深表歉意。

本次（虹桥）论坛关于开放贸易与安全发展的议题，对当今世界至关重要，也与我作为经济学家的研究方向高度契合——我长期研究世界经济、中国经济与美国经济。与全球大多数经济学家一样，我坚定支持自由贸易，反对任何形式的贸易壁垒，倡导思想自由流动。

我的研究试验也充分体现这一理念：我积极参与开源计算，与全球同行共享代码。在中国，我拥有许多优秀的合作伙伴与共同研究者，他们给予我新知，我们共享理念、共享代码。这些知识交流无法被“关税”阻隔，因为它们涉及人工智能在信息处理领域的应用、拓展和优化。

我们运用统计学方法研究经济发展规律，为企业和社会福利机构提供更优决策依据。因此，我非常期待本次论坛。我认为，推动网络安全与经济安全的根本途径在于合作与共享。此行我更希望倾听而非发言，对此充满期待。

再次感谢中国商务部与中国人民大学的邀请，这是莫大的荣幸。非常感谢！

Below are the scripts:

Hello! My name is Thomas J. Sargent. I'm an economist, and in a short video, I want to thank the Ministry of Commerce of China and Renmin University of China (a very distinguished university) for inviting me to attend the 8^th Hongqiao International Economic Forum. Forgive me for my pronunciation; it's not good in English, and it's even less proficient in Chinese, so I apologize.

Specifically, for the session on open trade and security-based development, these are two subjects that are very important today, and they're very important to me as an economic scientist who tries to study the world economy, the national economy of China, or the United States. Like many—I would say most—economists throughout the world, I believe in free trade. I don't like barriers to trade of any kind; I like the free flow of ideas.

One thing I do: I engage in open, contribute to and benefit from open-source computing, where you know we share and distribute code worldwide. I have very good friends and co-authors, co-researchers in China who teach me things, and we share ideas and share code. You can't put a tariff on them because you know a lot of them involve either the use, application, or sometimes even extension of AI to problems in information processing.

We use statistics to help us study how economies are developing and how we can make better decisions, both for individual firms and various social organizations designed to help public welfare. So I'm really looking forward to this conference. I think the way we promote security across the internet and security for our economies is to cooperate and to share. I want to listen more than talk and I'm really looking forward to it.

Again, I appreciate the Ministry of Commerce and Renmin University for inviting me. It's a true honor. Thank you very much.