课堂上，大学教授问他的学生甲：“上帝创造了一切吗？”
学生甲勇敢地回答说：“是的，他创造了一切！”
“上帝创造了每一样东西吗？”教授又问。
“是的，先生。”学生甲答道。
教授继续问：“如果上帝创造了一切，那么邪恶也是上帝创造的了？根据人类的主要行为来判断，上帝也是邪恶的了？”
学生甲沉默不语，无言以对。
教授很得意，自认为再次向学生证明了宗教信仰只是一些虚幻不实的神话。
这时，另一个学生举手并且说：“教授，我可以问您一个问题吗？”
“当然可以！”教授爽快地答道。
这个学生站起来问：“教授，寒冷存在吗？”
“这是什么问题，寒冷当然存在，难道你感觉不到吗？”教授答道，同学们哄笑起来。
这个学生反驳道:“先生，事实上寒冷并不存在！根据物理学原理，我们感觉到的寒冷实质上只是缺少热度，当热度存在时或者传递能量时，我们的身体是可以感 觉到的。热度是可以测量的，寒冷却不能，寒冷这个词只是为了我们描述缺少热度时的感觉。绝对零度（零下273度）是热度的完全消失，所有的物质停止一切运 动，包括分子原子等所有的范畴，不过这是绝对现象，事实上并不存在绝对零度。”
这个学生又问：“教授，黑暗存在吗？”
教授答：“当然存在。”
这个学生说道:“ 教授您又错了，黑暗同样不存在！事实上黑暗是因为缺少光亮。光是可以测量的，黑暗却不能。我们可以用牛顿的三棱镜将日光折射出各种各样的颜色，并且可以研 究它们各自的波长，但是黑暗是无法去测量的。仅仅是一道光线就可以划破一个黑暗的世界并将它照亮，但是你无法知道一个空间的黑暗是多少。所以黑暗一词只是 为了人类描述当光亮不存在的时候是什么样子。”
最后这个学生问道：“教授，邪恶存在吗？”
这时教授不是很肯定地说道：“当然，我已经说过了，我们每天都可以看到邪恶，每天都有人类的残忍行为施与生命，世界上到处都有邪恶和暴力的人群。这些事实除了邪恶还能是什么呢？”
这时这个学生说：“教授，您还是错了，邪恶并不存在！邪恶只是心中缺少爱的状态，这就像寒冷和黑暗一样，邪恶是人类用于来描述缺少爱的词语。上帝并没有 创造邪恶，上帝只创造了爱，只是当人类偷吃了禁果以后，心中的爱越来越少，邪恶是人们的心中缺少了上帝之爱的结果，这正如寒冷的到来是因为缺少热度，黑暗 的到来是因为没有光亮一样。”
这时，教授问：“年轻人，你叫什么名字？”
这个学生回答：“我叫艾尔伯特·爱因斯坦。”
译文:
Does evil exist ?
In the class, a university professor asked one of his students :" Does God create everything?"
The student answered bravely :" Yes, he creates everything."
" Does God create every things? " The professor asked again.
"Yes, sir." The student answered.
”The professor continued to ask:" If God create everything, does evil also created by God? According to the main actions of human beings, is God evil?"
The student was in silence and couldn't reply.
The professor seemed to be complacent and he thought he has proved again to the students that religious belief is just some unreal mythologies.
At this moment, another student raised his hand and said:" Professor, may I ask a question?"
"Sure." The professor said racily.
The student stood up and asked:" Professor, does cold exist?"
"What's your meaning? Cold do exist, don't you feel it?" The professor answered and other students all brusted into laughter.
The student retorted:" Sir, in fact cold does not exist! According to the elements of physics, the cold we feel substantially is just lack of heat. When the heat exists or the energy transmits, we can feel it. The heat can be measured, but the cold can't. The word cold is just for us to describe the feelings when we are lack of heat. The absolute zero(273 degrees below zero) is the complete obiteration of heat and alll things stop motion, including all the category, such as molecules, atoms and so on. But this is the absolute phenomena. In fact, there is no absolute zero."
The student asked again:" Professor, does dark exist?"
The professor answered:" Absolutely exist."
The student said:" You are wrong again. Dark don't exist, either! Actually, dark is the result of lack of light. Light can be measured while dark can not. We can use Newton's prism to decompose sunlight into its various colors and we can research their respective wavelength. But dark cannot be measured. Just a flash of light can split the dark world and bright it. Whereas, you can not know there is how much dark in a certain space. So the word dark is just for human to describe what it is like when there is no light."
At last, the student asked:" Professor, does evil exist?"
Then the professor said with unsureness:" Absolutely, I have said that we can see evil everyday. Everyday human have the act of cruelty and there are evil and violent human beings all around the world. What else can it be except evil?"
Then the student said:" Professor, you are still wrong. there is no evil! Evil is the state without love in the heart. It is the same as cold and dark. Evil is the word for human to describe the state lack of love. God doesn't creat evil but love. Only when human eat the forbidden fruit, love in the heart is becoming less and less. Evil is the result for human lack of God's love in the heart. As the coming of cold is because of the lack of heat and the coming of dark is because of the lack of light."
Then, the professor asked:" Young man, what's your name?"
The student answered:" My name is Albert Einstein."