Ptolemy

I know that I am mortal and ephemeral, but when I trace at my pleasure the windings to and fro of the heavenly bodies, my feet no longer touch the earth; I stand side by side with God himself and feed upon ambrosia.

The heavens are spherical, and move as a sphere.

The earth, in relation to the heavens, has the ratio of a point to a sphere.

The earth is immovable.

The primary purpose of astronomy is to predict the positions of the celestial bodies.

The most beautiful and divine of all things is the order of the heavens.

It is the property of the wise to be able to discern the truth from the false.

The things which are observed must be in agreement with the things which are demonstrated.

We ought to prefer the method of demonstration to that of mere opinion.

The greatest and most divine of all things is the contemplation of the heavens.

The most perfect motion is that which is uniform and circular.

It is not the business of astronomy to tell us what the heavens are, but how they move.

The earth is the center of the universe.

The stars are fixed in the celestial sphere.

The planets move in epicycles and deferents.

The motion of the planets is not uniform.

The sun and moon move in eccentric circles.

The eclipses of the sun and moon can be predicted.

The size of the earth can be measured.

The distance to the moon can be determined.