Man should humbly face nature.

In the context of computational learning, the concept of 'probably approximately correct' (PAC) learning provides a framework for understanding the efficiency and feasibility of learning algorithms.

出自先秦《荀子·解蔽》。大凡是人，往往都有惑于枝节问题而看不清大局的毛病。说明人性的弱点：看问题不全面，往往惑于表面现象，结果“只见树木，不见森林”，“捡了芝麻，丢了西瓜”。

Assume anyone asking for your account information for any reason is guilty of scamming you， unless proven innocent. The way to prove innocence is to call them back， or login to your account using numbers or a website that you provide， not them. Don’t release any identifying information while they are contacting you via phone， message or email. You must control the channel.

人的手十分精细和复杂，它不仅使心灵得以展现，还能使人跟整个环境建立一段特殊的关系。