使用最高级the saddest修饰thing，后半部分用名词性短语the death of conscience作表语，表达深沉的情感。
One who does not have a pious and ardent reverence for truth can never speak of conscience, of a sublime life, or of nobility. — Romain Rolland
Through vanity, one can understand glory; through conscience, one can understand justice. — Lando
Once a person loses their conscience, they become entirely worthless. — Kosen
A kind heart is an eternal banquet. — Comenius
To love others with the same heart one loves oneself, then benevolence knows no limit; to judge others with the same heart one judges oneself, then righteousness knows no limit. — Chao Buzhi
Conscience is merely the heart of right and wrong. — Wang Shouren (Wang Yangming)
In this world, there is only one path to happiness. It is either to possess a selfless and public-spirited conscience, or to have no conscience at all. — Ogren Nash
What is the power that makes a person the harshest judge of their own conduct? It is conscience, which serves as the defender of action and reason. — Sukhomlinsky
The saddest thing for an individual is the death of conscience; the saddest phenomenon in society is the collapse of justice. — Guo Moruo
The brilliant glory of the world often arises from sin; for the sake of external fame, one sacrifices one's conscience. — Shakespeare
凡是对真理没有虔诚的热烈的敬意的人，绝对谈不到良心，谈不到崇高的生命，谈不到高尚。——罗曼·罗兰
人可以由虚荣知道什么是荣耀，可以由良心知道什么是正义。——兰多
人一旦丧失了良心就毫无可取之处了。——科森
一颗善良的心就是一席永恒的筵席。——夸美纽斯
以爱己之心爱人，则仁不可胜用矣;以恶人之心恶己，则义不可胜用矣。——晁补之
良知只是个是非之心。——王守仁
在人世间，要幸福只有一条路。不是怀着大公无私的良心，便是完全不怀良心。——奥格伦纳休
使人做自己举止行为的最严厉的评判者的力量是什么？是良心，它成为行为和理智的捍卫者。——苏霍姆林斯基
一个人最伤心的事情无过于良心的死灭，一个社会最伤心的现象无过于正义的沦亡。——郭沫若
人世间的煊赫光荣，往往产生在罪恶之中，为了身外的浮名，牺牲自己的良心。——莎士比亚