Arcesilaus

Arcesilaus, a Greek philosopher, born in AEolia about 318 B.C. He was a pupil of Polemon, and after travels in Greece and Persia established himself at Athens, where he founded the new or middle Academy, a school which opposed the Stoics with a kind of modified Platonism, and inculcated the doctrine of acatalepsia or the impossibility of ascertaining truth by means of the senses. He died in 241 B.C.