Good writing comes from good talent.

No human investigation can claim to be scientific if it doesn't pass the test of mathematical proof.

For those colours which you wish to be beautiful, always first prepare a pure white ground.

The eye - which sees all objects reversed - retains the images for some time.

Experiment is the sole interpreter of the artifices of Nature.

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

Happy will they be who lend ear to the words of the dead.