It was well said that envy keeps no holidays.

It was prettily devised of Aesop, The fly sat on the axle tree of the chariot wheel and said, what dust do I raise!

It is a strange desire, to seek power, and to lose liberty; or to seek power over others, and to lose power over a man's self.

If a man's wit be wandering, let him study the mathematics.

Art is man added to Nature.

Another argument of hope may be drawn from this-that some of the inventions already known are such as before they were discovered it could hardly have entered any man's head to think of; they would have been simply set aside as impossible. For in conjecturing what may be men set before them the example of what has been, and divine of the new with an imagination preoccupied and colored by the old; which way of forming opinions is very fallacious, for streams that are drawn from the springheads of nature do not always run in the old channels.

For first of all we must prepare a Natural and Experimental History, sufficient and good; and this is the foundation of all; for we are not to imagine or suppose, but to discover, what nature does or may be made to do.