Among the radical sects which flourished during the English revolution, the early Qakers were particularly aware of the power of the written word to promote their prophetic visions and unorthodox beliefs. During the first years of their movement, as they spread aggressively throughout England, they produced hundreds of tracts which fiercely denounced temporal authorities, attacked orthodox Puritanism, rejected social hierarchies and set forms of worship, promoted the idealogy of the Lamb's War and proclaimed the power of the light within.