Pythagoras, the Greek philosopher and mathematician, advised his followers to avoid eating beans. He believed that beans were a symbol of death and that they contained the souls of the dead. Additionally, he thought that eating beans could lead to impure thoughts and behavior. This advice is part of Pythagoras' broader philosophy that emphasized the importance of purity and spiritual well-being.

Pythagoras, born around 570 BCE on the Greek island of Samos, was a prominent figure in ancient Greece, renowned for his contributions to mathematics, philosophy, and spirituality. Here are some additional facets of Pythagoras' life and teachings:

1. **Pythagorean Theorem:** Pythagoras is most famously associated with the Pythagorean Theorem, a fundamental principle in geometry. This theorem states that in a right-angled triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.

2. **Mathematical Contributions:** Beyond the Pythagorean Theorem, Pythagoras and his followers made significant contributions to mathematics, including the discovery of irrational numbers. They also delved into the mathematical properties of music and the relationships between numbers.

3. **Pythagorean Society:** Pythagoras established a secretive religious community or school in Croton (in present-day Italy), where his followers, known as Pythagoreans, engaged in philosophical and mathematical studies. The society had strict rules, rituals, and dietary restrictions, such as the avoidance of beans.

4. **Spiritual Beliefs:** Pythagoras' teachings extended beyond mathematics into spirituality and ethics. He believed in the transmigration of souls, the idea that souls are reborn into different bodies. This belief influenced his dietary recommendations, including the prohibition of bean consumption.

5. **Influence on Plato:** Pythagoras' ideas had a profound impact on later philosophers, particularly Plato. Plato admired Pythagorean mathematics and incorporated Pythagorean concepts into his own philosophical works.

6. **Political Influence:** Pythagoras was not only a philosopher and mathematician but also a political figure. His influence in Croton extended to political matters, and the Pythagorean community played a role in local governance.

7. **Legacy:** The Pythagorean School continued to exist after Pythagoras' death, although it faced challenges and eventually disbanded. Pythagorean ideas left an enduring legacy, influencing various fields of study for centuries to come.

While Pythagoras' specific dietary recommendations, such as avoiding beans, might seem peculiar to modern sensibilities, they were intricately woven into his broader philosophical and spiritual framework, emphasizing purity and the pursuit of higher truths.