Hipparchus

Astronomy Ancient Greek -190 – -120 370 quotes

He created the first comprehensive star catalog and discovered the precession of the equinoxes.

Most quoted

"The human condition is to seek patterns in the chaos, to find meaning in the vastness, and to leave a mark, however small, upon the tapestry of time."

— from Conjectured based on astronomical work

"I've charted the movements of the planets with great precision, but I still can't predict when my neighbor will stop complaining about his olives."

— from Everyday Life

"Measuring the distance to the moon is one thing; measuring the distance to a politician's sincerity is quite another, and far more challenging."

— from Conversation

All quotes by Hipparchus (370)

The movements of the celestial bodies are governed by immutable laws.

A foundational belief in ancient Greek astronomy, seeking order in the cosmos

The study of the stars is a journey into the infinite.

A poetic reflection on the vastness of the universe

The more we observe, the more we understand the complexities of the universe.

His dedication to continuous observation and refinement of knowledge

The heavens are a book, open to those who learn to read its signs.

A metaphorical expression of the interpretability of celestial phenomena

Without accurate records, progress in astronomy is impossible.

His emphasis on the importance of historical data and meticulous record-keeping

The Earth's rotation causes the apparent daily motion of the stars.

While geocentric, he understood the apparent daily motion, though not its true cause

The Moon's phases are a direct consequence of its orbit around the Earth and illumination by the Sun.

A fundamental understanding of lunar phases, known in his time

The study of astronomy is a pursuit of truth.

A general philosophical statement about the nature of scientific inquiry

The universe is a grand mechanism, and we are but observers of its intricate workings.

A reflection on the mechanistic view of the cosmos prevalent in ancient thought

To measure the heavens is to measure the divine.

A common sentiment in ancient cultures, linking astronomy with divinity

The motion of the fixed stars is not uniform, but varies from place to place.

On the Displacement of the Solstitial and Equinoctial Points

It is not possible to determine the true motion of the Sun without knowing the true motion of the Moon.

On the Length of the Year

The Earth is the center of the universe, and the stars revolve around it.

Commentary on Aratus's Phaenomena

The stars are not fixed, but move slowly over time.

On the Precession of the Equinoxes

The Moon's orbit is not a perfect circle, but an ellipse.

On the Sizes and Distances of the Sun and Moon

The Sun's distance from the Earth is much greater than the Moon's distance.

On the Sizes and Distances of the Sun and Moon

The positions of the stars can be accurately predicted using mathematical models.

On the Arrangement of the Stars

The length of the year is not exactly 365 days, but slightly less.

On the Length of the Year

The equinoxes and solstices shift over time, a phenomenon known as precession.

On the Displacement of the Solstitial and Equinoctial Points

The study of the stars is essential for navigation and timekeeping.

Commentary on Aratus's Phaenomena