The only person you should try to be better than is the person you were yesterday.
The mind is not a thing, but a process—an ever-changing flow of experiences and adaptations.
在危机时刻,真正的领导力会受到考验并显现出来。
过去从未消逝,它甚至从未成为过去。
Mathematics is a living subject, constantly evolving and growing.
深刻沉着、忠厚笃信,是第一等的禀赋;直率开朗、豪迈雄健,是第二等的禀赋;明智聪慧、能言善辩,是第三等的禀赋。