Mathematical proofs, like diamonds, are hard and clear, and will be touched with nothing but strict reasoning.

You shall find, that there cannot be a greater spur to the attaining what you would have the eldest learn, and know himself, than to set him upon teaching it his younger brothers and sisters.

The visible mark of extraordinary wisdom and power appear so plainly in all the works of creation.

We are all a sort of chameleons, that still take a tincture from things near us: nor is it to be wondered at in children, who better understand what they see, than what they hear.

If to break loose from the bounds of reason, and to want that restraint of examination and judgment which keeps us from choosing or doing the worst, be liberty, true liberty, madmen and fools are the only freemen: but yet, I think, nobody would choose to be mad for the sake of such liberty, but he that is mad already.

So difficult it is to show the various meanings and imperfections of words when we have nothing else but words to do it with.

All wealth is the product of labor.