The true test of a society is how it treats its most vulnerable members.
一个社会的真正考验在于它如何对待最脆弱的成员。
勇气是所有美德中最重要的，因为没有勇气，你就无法始终如一地实践其他美德。
The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.
你无法回到过去改变开头，但你可以从现在开始改变结局。
Safety isn't just a policy - it's a culture that must permeate every level of our organization.