Ideas

The Key to Critical Self-Awareness

The ancient-Greek commandment Know thyself turns out to be a great modern way to become happier, more empathetic, and more successful.

First published in The Atlantic on April 17, 2025

by Arthur C. Brooks, The Atlantic
June 5, 2025 | reading time: 8 Min.

Know thyself is the most famous maxim of Greek philosophy, carved into stone on the Temple of Apollo at Delphi. Why? you might ask. The greatest philosophers and writers throughout history are more likely to tell you why not, so foundational is the idea of self-knowledge to a meaningful existence. In his tragedy Thyestes, the Stoic philosopher Seneca writes, “Death lies heavily on him / Who, though to all the world well known, / Is stranger to himself alone.” And as Shakespeare asserts in his comedy As You Like It, “The fool doth think he is wise, but the wise man / knows himself to be a fool.”

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