Whoever despises the high wisdom of mathematics nourishes himself on delusion and will never still the sophistic sciences whose only product is an eternal uproar.

To enjoy - to love a thing for its own sake and for no other reason.

The sun gives spirit and life to the plants and the earth nourishes them with moisture.

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.

My body will not be a tomb for other creatures.

Anyone who conducts an argument by appealing to authority is not using his intelligence; he is just using his memory.

To such an extent does nature delight and abound in variety that among her trees there is not one plant to be found which is exactly like another; and not only among the plants, but among the boughs, the leaves and the fruits, you will not find one which is exactly similar to another.