The past is a wound that never heals.

The most painful state of being is remembering the future, particularly the one you'll never have.

最安全的加密是你没有使用的加密。

The most important thing in architecture is what cannot be seen.

左脑负责说话，右脑负责领导。

【释义】凯根打破童年决定论：快乐童年未必护航成年，而经历过黑暗的孩子反而可能锻造韧性。