BookBrief Logo
Dialogue Concerning the Two Chief World Systems
Goodreads ratings
4.09 / 5
Add to Your Library

Sign in to save this book to your reading lists

"Dialogue Concerning the Two Chief World Systems" Quotes

A thought-provoking dialogue questioning the Ptolemaic and Copernican systems of the universe.

Quotes

In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual.

Galileo Galilei

scienceauthorityreasoning

I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use.

Galileo Galilei

godreasonintellect

Doubt is the father of invention.

Galileo Galilei

doubtinvention

Measure what is measurable, and make measurable what is not so.

Galileo Galilei

measurement

In the sciences, the authority of thousands of opinions is not worth as much as one tiny spark of reason in an individual.

Galileo Galilei

scienceauthorityreason

Philosophy is written in this grand book, the universe, which stands continually open to our gaze. But the book cannot be understood unless one first learns to comprehend the language and read the letters in which it is composed.

Galileo Galilei

philosophyuniversecomprehension

We must say that there are as many squares as there are numbers.

Galileo Galilei

mathematicssquaresnumbers

Nature is relentless and unchangeable, and it is indifferent as to whether its hidden reasons and actions are understandable to man or not.

Galileo Galilei

naturereasonunderstandable