A theory is a tent pitched against the night; it provides sh... - Hipparchus

"A theory is a tent pitched against the night; it provides shelter but must be moved as understanding grows."

Hipparchus

Astronomer Mathematician Anatolia (Nicaea) 190–120

More from Hipparchus

"The stars are the land-marks of the universe."

"In the celestial sphere, we find the truth of all things."

"Measure twice, cut once; observe twice, conclude once."

"The heavens declare the glory of precision."