A well-spent day brings happy sleep.

Fame alone raises herself to Heaven, because virtuous things are in favour with God.

Art is the queen of all sciences communicating knowledge to all the generations of the world.

I roamed the countryside searching for answers to things I did not understand. Why shells existed on the tops of mountains. How the various circles of water form around the spot which has been struck by a stone, and why a bird sustains itself in the air.

Being willing is not enough. We must do.

The painter who has no doubt about his own ability will attain very little.

We know more about the movement of celestial bodies than about the soil underfoot.