I must stay alone and know that I am alone to contemplate and feel nature in full.

A painting which does not take its inspiration from the heart is nothing more than futile juggling.

The painter should paint not only what he has in front of him, but also what he sees inside himself. If he sees nothing within, then he should stop painting what is in front of him.

Close your bodily eye, that you may see your picture first with the eye of the spirit. Then bring to light what you have seen in the darkness, that its effect may work back, from without to within.

The eye and fantasy feel more attracted by nebulous distance than by that which is close and distinct in front of us.

The pure, frank sentiments we hold in our hearts are the only truthful sources of art.

All authentic art is conceived at a sacred moment and nourished in a blessed hour; an inner impulse creates it, often without the artist being aware of it.