Ptolemy

The soul is influenced by the configuration of the heavens at birth.

Eclipses are predicted by the syzygies of Sun and Moon.

The magnitude of the stars varies, though they appear fixed.

Harmony in the spheres is mathematical, not audible to mortal ears.

Optics teaches us how light bends and reflects in the heavens.

The Nile's flood is tied to the stars' positions.

Maps must correct for the curvature of the Earth.

The zodiac divides the ecliptic into twelve equal parts.

Retrograde motion is an illusion of our earthly perspective.

The fixed stars cataloged number in the thousands.

Philosophy begins with wonder at the celestial order.

The Sun's path is the ecliptic, foundation of time.

Lunar phases arise from the angle of sunlight.

The Earth's shadow causes lunar eclipses.

Constellations aid in navigation and prediction.

The heavens declare the glory of divine order.

Parallax measures distances beyond the Moon.

The analemma traces the Sun's annual path.

Spherical trigonometry unlocks the secrets of the sky.

Human life mirrors the cycles of the planets.