Simplicity is the state or quality of being simple. Something which is easy to understand or explain seems simple, in contrast to something complicated. In some uses, the label "simplicity" can imply beauty, purity, or clarity. "Simplicity" may also occur with negative connotations to suggest a deficit or insufficiency of nuance or of complexity of a thing, relative to what one supposes as required.
The concept of simplicity has been related to in the field of epistemology. According to Occam's razor, all other things being equal, the simplest theory is the most likely to be true. In the context of human lifestyle, simplicity can denote freedom from hardship, effort or confusion. Specifically, it can refer to a simple living style.