Since ancient times, the left side has stood for the side of the unconscious or the unknown; the right side, by contrast, has represented the side of consciousness or wakefulness. Through the late twentieth century, the movement of the Left limited themselves to a materialist understanding of reality- exemplified by Marxism- demanding social justice and economic equality but not the restoration of intuition and the recognition of the hidden, qualitative dimensions of being suppressed by the mental-rational consciousness, narrowly focused on the quantifiable.