It's such a luxury to be able to be happy about going to work in the morning.
For it is the duty of an astronomer to compose the history of the celestial motions through careful and expert study.
So far as hypotheses are concerned let no one expect anything certain from...
I am aware that a philosopher's ideas are not subject to the judgment of...
To know that we know what we know and to know that we do not know what we do...
There is no reason to repeat bad history.
There were various turning points, but the main one at the beginning was...
Look into the heavens and say, “It’s my turn to make history.
