Note 28 — Chapter XXVIII · THEÆTETUS.
Reading edition
Plato, Theætêt. p. 152 D.
Though Plato states the grounds of this theory in his ironical way, as if it were an absurd fancy, yet it accidentally coincides with the largest views of modern physical science. Absolute rest is unknown in nature: all matter is in perpetual movement, molecular as well as in masses.