Remarks on Colour is a collection of notes by Ludwig Wittgenstein

Ludwig Wittgenstein

Ludwig Josef Johann Wittgenstein was an Austrian philosopher who worked primarily in logic, the philosophy of mathematics, the philosophy of mind, and the philosophy of language. He was professor in philosophy at the University of Cambridge from 1939 until 1947...

 on Goethe's Theory of Colours. The work consists of Wittgenstein's reactions to Goethe's thinking, and an attempt to clarify the use of language about color. Believing that philosophical puzzles about color can only be resolved through attention to the involved language-games, Wittgenstein distinguishes between the science of optics

Optics

Optics is the branch of physics which involves the behavior and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behavior of visible, ultraviolet, and infrared light...

, as developed by Newton

Isaac Newton

Sir Isaac Newton PRS was an English physicist, mathematician, astronomer, natural philosopher, alchemist, and theologian, who has been "considered by many to be the greatest and most influential scientist who ever lived."...

, and Goethe's phenomenology

Phenomenology (science)

The term phenomenology in science is used to describe a body of knowledge that relates empirical observations of phenomena to each other, in a way that is consistent with fundamental theory, but is not directly derived from theory. For example, we find the following definition in the Concise...

 of color, remarking that:
Remarks on Colour is generally considered a very difficult work, partially on account of its fragmentation.