18 Inspiring Galileo Galilei Quotes

Galileo Galilei was an Italian astronomer, mathemetician, physicist, and professor who challenged the Aristotlian Theory of an Earth-centered universe.

That theory was then the lone theory accepted by the Roman Catholic Church. He became a proponent of the Copernican Theory that proposed a Sun-centered solar system.

In 1609, he used specifications from Dutch telescope makers to make his own telescope. He turned it toward the heavens and noted that Venus had phases like the moon. This could mean only one thing - that Venus orbited the sun and not the earth.

Here are some of Galileo's most inspiring and paradigm-challenging quotes. They evoke his passion for human agency and his willingness to challenge the status quo.