The behavior of an individual is determined not by his racial affiliation, but by the character of his ancestry and his cultural environment.
个体的行为不是由其种族归属决定的,而是由其祖先的特征和文化环境决定的。
Success is not final, failure is not fatal: it is the courage to continue that counts.
最大的错误就是以为自己无所不知。保持谦逊,不断学习。
数学是科学的钥匙和门。