“Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.”
“The object of life is not to be on the side of the majority, but to escape finding oneself in the ranks of the insane.”
“Any person capable of angering you becomes your master; he can anger you only when you permit yourself to be disturbed by him.”
“Ambition means tying your well-being to what other people say or do. Self-indulgence means tying it to the things that happen to you. Sanity means tying it to your own actions.”
“Most powerful is he who has himself in his own power.”
“Religion is regarded by the common people as true, by the wise as false, and by rulers as useful.”
“Circumstances don't make the man, they only reveal him to himself.”
“What saith Antisthenes? Hast thou never heard?— It is a kingly thing, O Cyrus, to do well and to be evil spoken of.”
“If someone is able to show me that what I think or do is not right, I will happily change, for I seek the truth, by which no one was ever truly harmed. It is the person who continues in his self-deception and ignorance who is harmed.”
“Errare humanum est, sed perseverare diabolicum: 'to err is human, but to persist (in the mistake) is diabolical.”