The term "expressionism" is meant to refer to the artist's expression of their soul in the painting. This is contrast to artistic schools which favor realism and naturalistic depictions of art. Ironically, the development of photography in the late 19th century made the demand for naturalistic depictions of art somewhat obsolete, thus in a sense, freeing artists to pursue other means of using color and line (the foundations of painting). The artist I choose is Claude he was born 14 November 1840 – 5 December 1926) and was a founder of French Impressionist painting, and the most consistent and prolific practitioner of the movement's philosophy of expressing one's perceptions before nature, especially as applied to plein-air landscape painting.[1][2] The term "Impressionism" is derived from the title of his painting Impression, soleil levant (Impression, Sunrise), which was exhibited in 1874 in the first of the independent exhibitions mounted by Monet and his associates as an alternative to the Salon de Paris.

Impressionist Paintings

"The Scream", Edvard Munch, 1893
This picture uses bright colors with simplistic figures and shape. It screams, fright, fear, despondency. It looks as if he is  afraid of the persons lagging behind and as such became frightened because he is by himself. Contrary the picture is colorfully, and bright and doesn't reflect the theme "The Scream"  but his face screamed scared. Therefore I am not sure where  the author was because by looking at the painting he doesn't seems to be in a lonely place, maybe it was a feeling or a flashback to something scary he had witnessed before which was captured in this painting.

"Impression Sunrise" Claude Monet, 1872Impressionism painting are colorful which usually captures the atmosphere at a particular time of day. This picture has a beautiful backdrop, I can see the sunlight which normally signifies a new day, and how it reflections strikes the water, I see cloud covers, and I can see boat. This picture in essence captures the sun. As it regards to Nihilism even though we can see the sunlight you can also see cloud covers which normally means dull, dreary and possible rain. Those themes are characteristic of uncertainties.

"San Giorgio Maggiore at Dusk", Monet, 1908-12 
This picture is colorful and beautiful, the colors mixed together gives a beautiful contrast. It captures the effect of when the sun is going down. This picture is abstract its as if i can touch it. This picture marks the beginning of twilight before sunrise (above pic). The moon shivers away and becomes weak as the sun peaks it way through the clouds. This picture symbolizes the uprising of a new day.

The pictures above all reflect the Impressionist Theme. What I conclude is that there isn't any one way to express yourself your art. All three pictures have the same theme yet they all have different meanings. The Artist's using the  Impressionism theme all use different style. I think the meaning of the picture and the themes are subjective.