Third leader of Plato's Academy. He sought to refine Plato by distinguishing three forms of being corresponding to sense, intellect and opinion.

Socrates wants to hear about how his ideal state will interact with other states. Critias begins to tell the story of how Athens used to be an ideal state but waged war on Atlantis. Critias then defers to Timaeus to tell the part of the story from the origin of the universe to man.
Timaeus goes on to explain much of Plato's cosmology and religious views
Timaeus defines the so-called Platonic solids, associating the four classical elements, and a fifth element which made up the heavens:

• cube → earth
• octahedron → air
• icosahedron → water
• tetrahedron → fire
• dodecahedron → heavens

Socrates locates the parts of the soul within the human body:

• Reason → head
• spirit → top third of the torso
• appetite → middle third of the torso, down to the navel

German physicist who predicted the Schumann resonances

French mathematician and physicist. Her work lies in the intersection of mathematics and physics, notably in Einstein's general theory of relativity. She is one of the pioneers of the study of general relativity, and particularly known as the first to prove the well-posedness of the Einstein equations.