The E language and its standard library employ a capability-based design philosophy throughout in order to help programmers build secure software and to enable software components to co-operate even if they don't fully trust each other.
E语言及其标准库始终采用基于能力（英语：capability-based security）的设计理念，以帮助程序员构建安全的软件，并使软件组件即使彼此不完全信任也能够合作。