Two of the most-read voices on how to live — and two opposite answers. Below, each thinker and a summary of their views, drawn from their own public-domain writings.
Marcus Aurelius
Marcus Aurelius (121–180 CE) was Roman emperor from 161 to 180 and a Stoic philosopher. His private notebook, the *Meditations*, written on campaign and never meant for publication, is the central Stoic text in this corpus.
Marcus Aurelius, a Stoic emperor, views the universe as a rationally ordered whole governed by Providence or Nature, where virtue alone is good and vice alone evil. External circumstances like health, wealth, and pain are indifferent; the wise person focuses solely on their own rational choices and inner disposition. He emphasizes living in conformity with nature, accepting fate without complaint, and recognizing the interconnectedness of all things. Death is natural and not to be feared; one should act justly, speak truthfully, and maintain tranquility by not being disturbed by impressions. His meditations urge constant self-examination, mindfulness of mortality, and alignment with the universal reason that pervades all existence.
Core views
Friedrich Nietzsche
Friedrich Nietzsche (1844–1900) was a German philosopher and philologist whose works — *Thus Spake Zarathustra*, *Beyond Good and Evil*, *On the Genealogy of Morals* and others — attacked conventional morality and religion and explored will to power, self-overcoming, and the creation of values.
Nietzsche's worldview centers on the affirmation of life, the body, and the will to power, rejecting absolute moral values and advocating for self-overcoming. He critiques traditional morality as a slave morality that suppresses strength and creativity, instead championing a master morality that embraces power, danger, and the capacity to inflict and endure great pain. He emphasizes the body as the seat of wisdom, with the ego and spirit as its instruments. Nietzsche calls for a 'voluntary death' at the right time, and sees suffering as necessary for growth, not something to be eliminated. His stance is one of radical individualism, urging individuals to create their own values and live beyond good and evil.
Core views
View summaries are generated from the thinkers' own writings in the corpus (Meditations; Zarathustra, Beyond Good and Evil, the Genealogy, and others), not from outside biography.