Therefore, when I considered this carefully, the contempt which I had to fear because of the novelty and apparent absurdity of my view, nearly induced me to abandon utterly the work I had begun.
In so many and such important ways, then, do the planets bear witness to the earth's mobility.
Therefore, having obtained the opportunity from these sources, I too began to consider the mobility of the earth.
Mathematics is written for mathematicians.
Pouring forth its seas everywhere, then, the ocean envelops the earth and fills its deeper chasms.
I am aware that a philosopher's ideas are not subject to the judgment of ordinary persons, because it is his endeavour to seek the truth in all things, to the extent permitted to human reason by God.