Nepedia
Back to Discover
Advanced Reader
📖

Carneades

philosophy religion Maturity 11-13 death dying Next article →

This article covers sensitive topics: death_dying. Parents can manage visibility in Parental Controls.

Carneades was a prominent Greek philosopher from the Hellenistic era.

Carneades Nuremberg Chronicle
Carneades Nuremberg Chronicle

He was a leading figure of the Academic Skeptics in Athens. This group practiced a specific type of skepticism within Plato's Academy. They held that all knowledge is impossible to obtain. The only exception was the knowledge that all other knowledge is impossible. Carneades was born in Cyrene, located in North Africa, around 214 or 213 BC. He eventually moved to Athens to pursue his studies and teaching career.

Carneades developed a complex theory regarding how humans acquire truth. He examined three primary methods used to find a criterion of truth. These methods are sensation, or the use of our senses. The second is conception, which involves mental ideas. The third is reason, also known as logos. Carneades argued that these three methods are all flawed. He believed reason depends on conception, and conception depends on sensation. Because we cannot prove our sensations are always true, we cannot trust the reasoning that follows them.

To make his philosophy practical, Carneades introduced the concept of probability. He did not mean statistical probability as we use it today. Instead, he meant the degree of persuasiveness or plausibility of an idea. Since absolute certainty is impossible, he argued we must act on what seems most likely. This provided a pragmatic response to the problems of skepticism. It allowed people to function in daily life without needing absolute proof. He believed we should be guided by what appears most true among competing ideas.

According to the writings of Sextus Empiricus, Carneades used three specific criteria for evaluating arguments. An argument should be presented in a convincing or persuasive way. It must also be consistent with other arguments that have been put forward. Finally, the idea should be able to be confirmed through testing. These steps allowed a person to accept an idea tentatively. This method helped bridge the gap between total doubt and the need for action.

Carneades had a significant impact on the political and social life of his time. In 155 BC, at age fifty-eight, he traveled to Rome as an ambassador. He went with the Stoic Diogenes of Babylon and the Peripatetic Critolaus. Their mission was to discuss a fine of 500 talents imposed on Athens. During this trip, Carneades became famous for his eloquent orations. He spoke specifically about the nature of justice in the presence of Roman leaders. These speeches caused great consternation among the Roman political class.

One famous event involved his two speeches on justice. In his first oration, he praised the virtue of Roman justice. However, the very next day, he delivered a second oration that refuted his own previous points. He argued that justice is not a natural virtue. Instead, he claimed justice is an artificial compact used to maintain a well-ordered society. This idea shocked the leader Cato the Elder. Cato was so concerned by these arguments that he moved the Senate to send Carneades back to Athens. He wanted to protect Roman youth from these re-examining ideas.

We do not have any original books written by Carneades. His ideas survived because his successor, Clitomachus, wrote about them. Clitomachus's own books were eventually lost to history. We now know his thoughts through the indirect writings of Cicero and Sextus Empiricus. Carneades was known for his unwearied industry and intense focus on study. He was so engrossed in philosophy that he often neglected his own physical needs. Some accounts say he was so distracted that his servant, Melissa, had to feed him. He even used hellebore to purge himself to achieve a sharper mind for debates.

Carneades lived a long life, dying in 129 or 128 BC. He was approximately 85 years old, though some sources like Cicero suggest he was 90. In his final years, he suffered from cataracts in his eyes. He struggled with the physical decay of nature and expressed great impatience with it. Despite his personal struggles, his work revived the glory of the Academic Skeptics. His theories on plausibility and reasonable evidence remain a major contribution to the history of philosophy.

686 words

Where will your curiosity go next?

Keep exploring at your chosen reading level.

🖼️ Images & Media (1)
File:Carneades Nuremberg Chronicle.jpg
Carneades Nuremberg Chronicle.jpg
More to explore

🔬 Go deeper

More advanced topics to explore

🪜 Step back

Simpler topics to build understanding

What is Nepedia?

A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.