An idea, thought, or notion conceived through mental activity. The words concept and conception are applied to mental formulations on a broad scale.Quotes about concept: "Art is the expression of the profoundest thoughts in the simplest way." Albert Einstein (1879-1955), German scientist. "I begin with an idea and then it becomes something else." Pablo Picasso (1881-1973), Spanish modern artist. "There is nothing worse than a brilliant image of a fuzzy concept." Ansel Adams (1902-1984), American photographer. See zone system. Also see conceptual, conceptual art, creativity, fantasy, interdisciplinary, knowledge, meaning, and memory.