A man who keeps company with glaciers comes to feel tolerably insignificant by and by.

The vivacity and brightness of colors in a landscape will never bear any comparison with a landscape in nature when it is illumined by the sun, unless the painting is placed in such a position that it will receive the same light from the sun as does the landscape.

If you look at a luminous body in the far distance through a smallhole it will seem to grow less, and if you look at it near at hand it will not undergo any change. That is that if you look at this light atadistance of one or two braccia from the aforesaid hole it will not undergo any change whether you are looking at it through this hole or outside of it.

Vitality and beauty are gifts of Nature for those who live according to its laws.

To any white body receiving the light from the sun, or the air, the shadows will be of a bluish cast.

Of the original phenomena, light is the most enthralling.