“We, on the other hand, must take for granted that the things that exist by nature are, either all or some of them, in motion.”

“Definition of tragedy: A hero destroyed by the excess of his virtues”

“A body in motion can maintain this motion only if it remains in contact with a mover.”

“For any two portions of fire, small or great, will exhibit the same ratio of solid to void; but the upward movement of the greater is quicker than that of the less, just as the downward movement of a mass of gold or lead, or of any other body endowed with weight, is quicker in proportion to its size.”

“Something is infinite if, taking it quantity by quantity, we can always take something outside.”

“In dealing with the State, we ought to remember that its institutions are not aboriginal, though they existed before we were born; that they are not superior to the citizen; that every one of them was once the act of a single man; every law and usage was a man's expedient to meet a particular case; that they all are imitable, all alterable; we may make as good; we may make better.”

“When fear enters the heart of a man at hearing the names of candidates and the reading of laws that are proposed, then is the State safe, but when these things are heard without regard, as above or below us, then is the Commonwealth sick or dead.”

“In the last analysis, my fellow country men, as we in America would be the first to claim, a people are responsible for the acts of their government.”