耐心和坚持是科学发现的无名英雄。
Patience and persistence are the unsung heroes of scientific discovery.
Your most unhappy customers are your greatest source of learning.
"Success is not just about making money, it's about making a difference."
El poeta es un testigo de su tiempo, un cronista de la emoción humana.
解析:主张统治者不应推崇贤能,不使人民争夺名位;不珍贵难得的财物,不使人民偷盗;不显耀足以引起贪心的事物,使民心不被扰乱。