The most elegant mathematical proofs are those that reveal truth with simplicity.
最优雅的数学证明是那些以简单揭示真理的证明。
人的状况...是一种每个人对每个人的战争状况。
积极心理学既关注弱点也关注优势,既对修复最坏的事情感兴趣,也对建立生活中最好的事情感兴趣。
I never give up. I never give in.
Freedom is God-given right.