One of the examples of false notions and beliefs used by Francis Bacon in Novum Organum. The basic idea is that mankind falsely assumes that human sense is the measure of all things. This mistake has been made by many philosophers. Protagoras is probably the one most remembered for it.

Bacon said that all things are measured by the individual and not the measure of the universe. He also characterized human nature as "... a false mirror, which, receiving rays irregularly, distorts and discolors the nature of things by mingling its own nature with it."