Plato to Polybius on Constitutional Change

Plato to Polybius on Constitutional Change

By Gresham College

What type of constitution is the most resilient one? This lecture will look at what ancient thinkers, such as Plato and Polybius, thought.

Date and time

Location

Gresham College

Barnard's Inn Hall Holborn London EC1N 2HH United Kingdom

Good to know

Highlights

  • In person

About this event

Government • State Government

Plato in the fourth century BCE penned an indelible sequence of constitutional decline ending in tyranny, as well as a more complex set of possibilities for mixing different constitutional kinds. Two centuries later, Polybius portrayed constitutional change as cyclical, with an eventual collapse of democracy into ‘ochlocracy’ (mob rule) and then reversion to monarchy. These and other ancient authors proposed that a mixed constitution might prevent unwanted political change – an idea that would influence many later generations of political thinkers. 

A lecture by Professor Melissa Lane.

This event is also available to watch live online. To register, visit: https://www.gresham.ac.uk/whats-on/plato-polybius

Gresham College has offered free public lectures for over 400 years, thanks to the generosity of our supporters. We believe that everyone should have the opportunity to learn from some of the greatest minds. To support Gresham College's mission, please consider making a donation: Donate Today | Gresham College

Organized by

Gresham College

Followers

--

Events

--

Hosting

--

On Sale Apr 28, 2026 at 8:00 AM