In the world of cryptography, the only secure system is the one that is never connected to any network.

出自北齐·颜之推《颜氏家训·文章》。书写文章要尊崇“三易”的原则，即文章内容要清晰明了，这是第一项。书写的文字要简单概要，这是第二项。书写的段落要读起来朗朗上口这是第三项。

Sustainability is not an option; it's a responsibility we owe to future generations.

我明白了人们会忘记你说过的话，忘记你做过的事，但他们永远不会忘记你给他们的感受。