The security dilemma is a fundamental feature of international politics, as states' efforts to increase their own security often decrease the security of others.

天赋不是天才， 而且不是天才的人再怎么努力也成不了天才。要么就做一代名家要么干脆不做。

Olympism seeks to create a way of life based on the joy found in effort， the educational value of a good example and respect for universal fundamental ethical principles.

数学的美在于它能够将复杂的思想简化为优雅的结构。

生活就是不断被意外所惊讶。