I am not poor. Poor are those who desire many things.

Common Sense is that which judges the things given to it by other senses.

Painting is poetry that is seen rather than felt, and poetry is painting that is felt rather than seen.

He who does not understand the supreme certainty of mathematics is wallowing in confusion.

Many have made a trade of delusions and false miracles, deceiving the stupid multitudes.

O Time! consumer of all things; O envious age! thou dost destroy all things and devour all things with the relentless teeth of years, little by little in a slow death. Helen, when she looked in her mirror, seeing the withered wrinkles made in her face by old age, wept and wondered why she had twice been carried away.

The variety of colour in objects cannot be discerned at a great distance, excepting in those parts which are directly lighted up by the solar rays.