Virtue does not come from money, but from virtue comes money and all other good things to man, both to the individual and to the state.
It is never right to do wrong or to requite wrong with wrong, or when we suffer evil to defend ourselves by doing evil in return.
It is perfectly certain that the soul is immortal and imperishable, and our souls will actually exist in another world.
Not life, but a good life, is to be chiefly valued.《克里托篇》
We can easily forgive a child who is afraid of the dark; the real tragedy of life is when men are afraid of the light.
Justice means minding your own business and not meddling with other men’s concerns.《理想国》
The first and greatest victory is to conquer yourself; to be conquered by yourself is of all things most shameful and vile.《法律篇》
Wonder is the feeling of the philosopher, and philosophy begins in wonder.
I am the wisest man alive, for I know one thing, and that is that I know nothing.
The difficulty, my friends, is not in avoiding death, but in avoiding unrighteousness; for that runs faster than death.
Physical training is good, but it should be voluntary; forced learning does not stay in the mind.
Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws.
Opinion is the medium between knowledge and ignorance.
The beginning is the most important part of the work. For in the beginning, the character is being formed, and the impressions we receive are indelible.
Ignorance, the root and stem of every evil.
德性并非来自财富，相反，财富及其他一切人类福祉，无论对个人还是城邦，皆源于德性。
行不义之事永远不正当，不能以恶报恶，遭受恶行时也不可通过作恶来自我防卫。
灵魂无疑是不朽且不灭的，我们的灵魂必将在另一个世界真实存在。
真正该珍视的不是生命，而是善的生活。
正义就是各司其职，不干涉他人事务。
首要且最伟大的胜利是战胜自我；被自我征服则是最可耻、最卑劣之事。
我是世界上最智慧的人，因为我知道一件事，那就是我一无所知。