"To be forgiven is only half the gift. The other half is that we also can forgive, that we can release ourselves from the old, old burden of resentment and recrimination."

未来属于那些能够在盈利和环境责任之间取得平衡的人。

可持续性是采石业的未来，我们必须立即行动。

——〈民权主义第五讲〉，1924年4月20日

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.