All objects transmit their image to the eye in pyramids and the nearer to the eye these pyramids are intersected the smaller will the image appear of the objects which cause them.

Feathers shall raise men even as they do birds towards heaven :- That is by letters written with their quills.

The noblest pleasure is the joy of understanding.

Weight is caused by one element being situated in another; and it moves by the shortest line towards its centre, not by its own choice, not because the centre draws it to itself, but because the other intervening element cannot withstand it.

Marriage is like putting your hand into a bag of snakes in the hope of pulling out an eel.

The knowledge of all things is possible

Nothing is more apt to deceive us than our own judgment of our work. We derive more benefit from having our faults pointed out by our enemies than from hearing the opinions of friends.