"Arch Linux is an independently developed, i686/x86-64 general purpose GNU/Linux distribution. Development focuses on simplicity, minimalism, and code elegance. Arch is installed as a minimal base system, configured by the user upon which their own ideal environment is assembled by installing only what is required or desired for their unique purposes. GUI configuration utilities are not officially provided, and most system configuration is performed from the shell by editing simple text files. Arch strives to stay bleeding edge, and typically offers the latest stable versions of most software." 
"The following five core principles comprise what is commonly referred to as the Arch Way, or the Arch Philosophy, perhaps best summarized by the acronym KISS for Keep It Simple, Stupid." 
Arch Linux defines simplicity as without unnecessary additions, modifications, or complications, and provides a lightweight UNIX-like base structure that allows an individual user to shape the system according to their own needs. In short: an elegant, minimalist approach.
Simplicity of implementation, code-elegance, and minimalism shall always remain the reigning priorities of Arch development.
Arch Linux targets and accommodates competent GNU/Linux users by giving them complete control and responsibility over the system.
Arch Linux uses simple tools, that are selected or built with openness of the sources and their output in mind.
By keeping the system simple, Arch Linux provides the freedom to make any choice about the system.