Arcesilaus (Arcesila`us) , a Greek philosopher, a member of the Platonic School and founder of the New Academy, who held in opposition to the Stoics that perception was not knowledge, denied that we had any accurate criterion of truth, and denounced all dogmatism in opinion.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Arca`dius * Archæology