Idea

Nature

Physis: the way things grow, move, and are. To live according to nature was the first and last commandment of Greek philosophy.

The earliest philosophers asked: what is the nature of the world? Thales said water. Heraclitus said fire. Democritus said atoms. But physis also means the nature of a thing, what it tends toward, what it is meant to be. Living according to nature could mean anything from Diogenes sleeping outdoors to Aristotle studying biology to the Stoics accepting fate. The word carried both scientific and moral weight.

Visual Threads

Thales stands by Miletus harbor as rain, sea, wells, and flowing channels merge into one watery system around ships and temples. — Water gathers the world into one question.

Thales

A robed figure watches ships in an Ionian harbor, with ruins, still water, and rain lines suggesting nature studied through the sea. — The harbor becomes a first philosophy.

Thales

A lone figure stands on a twilight riverbank as a temple burns across the water and fire reflects in shifting currents. — Everything flows, even fire.

Heraclitus

Thinkers Who Shaped This Idea

Ancient Greece· 624-262 BCE

Thales

c. 624 BCE – c. 546 BCE

Anaximander

c. 610 BCE – c. 546 BCE

Anaximenes

c. 586 BCE – c. 526 BCE

Xenophanes

c. 570 BCE – c. 478 BCE

Heraclitus

c. 535 BCE – c. 475 BCE

Anaxagoras

c. 500 BCE – c. 428 BCE

Empedocles

c. 494 BCE – c. 434 BCE

Leucippus

c. 480 BCE (disputed) – c. 420 BCE (disputed)

Democritus

c. 460 BCE – c. 370 BCE

Diogenes

c. 412 BCE – c. 323 BCE

Aristotle

384 BCE – 322 BCE

Theophrastus

c. 371 BCE – c. 287 BCE

Epicurus

341 BCE – 270 BCE

Zeno of Citium

c. 334 BCE – c. 262 BCE

Rome & the Stoics· 106 BCE-485 CE

Lucretius

c. 99 BCE – c. 55 BCE

Marcus Aurelius

121 CE – 180 CE

Galen

129 CE – c. 216 CE (traditionally 199 CE)

Classical China· 571-233 BCE

Laozi

c. 571 BCE

Yang Zhu

c. 440 BCE – c. 360 BCE

Zou Yan

c. 305 BCE – c. 240 BCE

Dong Zhongshu

c. 179 BCE – c. 104 BCE

Wang Chong

27 CE – c. 100 CE

The Islamic Golden Age· 800-1274 CE

Al-Razi

c. 854 CE – 925 CE

Ibn al-Haytham

c. 965 CE – c. 1040 CE

Al-Biruni

973 CE – c. 1048 CE

Ibn Sina

980 CE – 1037 CE

Ibn Tufayl

c. 1105 CE – 1185 CE

Nasir al-Din al-Tusi

1201 CE – 1274 CE

Ibn Khaldun

1332 CE – 1406 CE

Classical India· 600 BCE-550 CE

Kapila

c. 6th century BCE

Medieval Europe· 354-1349 CE

John Scotus Eriugena

c. 815 CE – c. 877 CE

Hildegard of Bingen

1098 CE – 1179 CE

Albertus Magnus

c. 1200 CE – 1280 CE

Roger Bacon

c. 1219 CE – c. 1292 CE

Early Modern· 1561-1716 CE

Giordano Bruno

1548 CE – 1600 CE

Galileo Galilei

1564 CE – 1642 CE

Margaret Cavendish

1623 CE – 1673 CE

Spinoza

1632 CE – 1677 CE

The Enlightenment· 1694-1797 CE

Baron d'Holbach

1723 CE – 1789 CE

Modern Philosophy· 1807-1953 CE

Arthur Schopenhauer

1788 CE – 1860 CE

Rabindranath Tagore

1861 CE – 1941 CE