People don't know the value of what they have until it is gone: Freedom suppressed and again regained bites with keener fangs than freedom never endangered.... Liberty is rendered even more precious by the recollection of servitude. Don't wait till freedom is gone before you enjoy, value, support, protect and make the most of it!
Whatever is done without ostentation, and without the people being witnesses of it, is, in my opinion, most praiseworthy: not that the public eye should be entirely avoided, for good actions desire to be placed in the light; but notwithstanding this, the greatest theater for virtue is conscience.
The following passage is one of those cited by Copernicus himself in his preface to De Revolutionibus: "The Syracusan Hicetas, as Theophrastus asserts, holds the view that the heaven, sun, moon, stars, and in short all of the things on high are stationary, and that nothing in the world is in motion except the earth, which by revolving and twisting round its axis with extreme velocity produces all the same results as would be produced if the earth were stationary and the heaven in motion. . . ."
We rejoice in the joys of our friends as much as we do our own, and we are equally grieved at their sorrows. Wherefore the wise people will feel toward their friends as they do toward themselves, and whatever labor they would encounter with a view to their own pleasure, they will encounter also for the sake of their friends.
These (literary) studies are the food of youth, and consolation of age; they adorn prosperity, and are the comfort and refuge of adversity; they are pleasant at home, and are no incumbrance abroad; they accompany us at night, in our travels, and in our rural retreats.
The men who administer public affairs must first of all see that everyone holds onto what is his, and that private men are never deprived of their goods by public men.
The beauty of the world and the orderly arrangement of everything celestial makes us confess that there is an excellent and eternal nature, which ought to be worshiped and admired by all mankind.