Nasir al-Din al-Tusi
He developed the Tusi couple, a mathematical device that allowed for the generation of linear motion from circular motion, impacting later models.
Most quoted
"To be a true scholar, one must be willing to admit error, even if it means losing an argument to a younger, less experienced mind. A bitter pill, but necessary."
— from Attributed
"The apparent retrograde motion of the planets is not a true motion, but an illusion caused by the combination of their own motion and the Earth's motion."
— from Al-Tadhkira fi 'ilm al-hay'a (Memoir on Astronomy)
"To truly understand the heavens, one must first understand the limitations of the earthly mind. A task often more challenging than mapping the stars."
— from Attributed
All quotes by Nasir al-Din al-Tusi (433)
Orbits are circles within circles, harmonious and just.
The quadrant measures not just angles, but truth.
Stars fall not; they streak across our fleeting vision.
Astronomy bridges earth and divine intellect.
The zodiac's wheel turns with inexorable fate.
Precision in calculation yields beauty in prediction.
Celestial mechanics mirror the soul's journey.
The armillary sphere embodies cosmic unity.
Ecliptic paths reveal the sun's hidden dance.
In darkness, stars affirm the light of knowledge.
Planetary retrogrades challenge and refine our models.
The heavens declare the glory of mathematical order.
Observing Venus, we see beauty in opposition.
Time is measured by the stars' silent vigil.
The universe expands not, but rotates in perfection.
Witty astronomers jest: the moon smiles at our follies.
Jupiter's moons, unseen by us, orbit unseen truths.
The sextant aligns human sight with heavenly will.
In life's brevity, stars offer immortal lessons.
Auroras dance where earth meets sky's boundary.