"So far as hypotheses are concerned, let no one expect anything certain from astronomy, which cannot furnish it, lest he accept as the truth ideas conceived for another purpose, and depart from this study a greater fool than when he entered it"

This quote by Nicolaus Copernicus is a warning to those who are researching astronomy. He is warning against anticipating certainty from astronomy, as it can not provide it. He is suggesting that a person ought to not accept concepts that have actually been conceived for an additional function as truth, as this could lead to one leaving the study of astronomy as a better fool than when they entered it. This is a suggestion that astronomy is a discipline that is constantly progressing which one should not take any suggestion as outright truth. Copernicus is highlighting the significance of being unbiased as well as of questioning ideas, rather than blindly accepting them. He is additionally highlighting the significance of being simple as well as of recognizing that there is still much to find out in the field of astronomy.