It was granted to me alone to discover all the new phenomena in the sky and nothing to anybody else. This is the truth which neither envy nor malice can supress.

Spots are on the surface of the solar body where they are produced and also dissolved, some in shorter and others in longer periods. They are carried around the Sun; an important occurrence in itself.

God is known by nature in his works, and by doctrine in his revealed word.

Nothing can be taught to a man, only it's possibly to help him to discover it inside.

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

Showing a greater fondness for their own opinions than for truth, they sought to deny and disprove the new things which, if they had cared to look for themselves, their own senses would have demonstrated to them.

They who depend upon manifest observations will philosophize better than those who persist in opinions repugnant to the senses.