I think he who knows himself will know accurately, not the opinion of others about him, but what he is in reality: he ought to discover within himself what is right for him to do and not learn it from without:

So long as you are a slave to the opinions of the many you have not yet approached freedom or tasted its nectar: But I do not mean by this that we ought to be …

Nature loves to hide her secrets, and she does not suffer the hidden truth about the essential nature of the gods to be flung in naked words to the ears of the…

Is it not absurd when a human being tries to find happiness somewhere outside himself, and thinks that wealth and birth and the influence of friends: is of the…

I also am other than what I imagine myself to be. To know this is forgiveness. [p.200]

Self-knowledge can be painful, but not half so damaging as self-ignorance

It is terrible to destroy a person's picture of himself in the interests of truth or some other abstraction.