Anaximander
He proposed an infinite, undefined substance called the 'apeiron' as the origin of the cosmos and a geocentric model.
Quotes by Anaximander
The earth is in the middle, occupying the center of the cosmos, and is spherical.
The boundless (apeiron) is eternal and ageless, and it encompasses all the worlds.
Things perish into those things out of which they have their birth, according to that which is ordained; for they give reparation to one another and pay the penalty of their injustice according to the disposition of time.
The source of coming-to-be for existing things is that into which destruction, too, happens, 'according to necessity; for they pay penalty and retribution to each other for their injustice according to the assessment of Time.'
The earth is aloft, not supported by anything, but remaining on account of its equal distance from all things.
The sun is highest, and the circles of the fixed stars are lowest.
Winds occur when the finest vapours of the air, separated off, are set in motion when other vapours mass together.
Rain is produced from the vapour that is sent up from the earth under the influence of the sun.
Lightning occurs when wind breaks out and splits the clouds.
The sea is what remains of the original moisture; the fire has dried up most of it, and what is left has become salty because of the burning.
The earth was once all water, and has been drying up over time.
The boundless (apeiron) has no beginning, but itself seems to be the beginning of all other things.
It is necessary that there be some boundless nature from which the heavens and the worlds in them come to be.
The boundless (apeiron) is both divine and immortal and indestructible.
The earth is in equipoise, staying where it is because of its equal distance from everything.
The circle of the sun is twenty-seven times larger than the earth, and the circle of the moon eighteen times.
The sun is equal in size to the earth, but the circle from which it breathes and by which it is carried is twenty-seven times larger than the earth.
The moon shines with a borrowed light, from the sun.
Thunder is caused by the collision of clouds; lightning is the tearing of the cloud by the wind as it escapes.
Earthquakes occur when the earth is greatly parched and then cracked by the heat of the sun, or when masses of earth fall into cavernous hollows within the earth.