Scripture is a book about going to Heaven. It's not a book about how the heavens go.

I do not know what to say in a case so surprising, so unlooked for and so novel.

The earth, in fair and grateful exchange, pays back to the moon an illumination similar to that which it receives from her throughout nearly all the darkest gloom of the night.

It is a beautiful and delightful sight to behold the body of the Moon.

With regard to matters requiring thought: the less people know and understand about them, the more positively they attempt to argue concerning them.

In my studies of astronomy and philosophy I hold this opinion about the universe, that the Sun remains fixed in the centre of the circle of heavenly bodies, without changing its place; and the Earth, turning upon itself, moves round the Sun.

Where the senses fail us, reason must step in.