Chapter XII
., I.
[455] _Eruditio didascalica_, i. cap. 12 (Migne, _Pat. Lat._ 176, col. 750).
[456] Cf. Abelson, _The Seven Liberal Arts_ (New York, 1906).
[457] I am speaking generally, that is to say, omitting for the present the aberrant or special or intrusive tendencies found in a man like Roger Bacon, for example. They were of importance for what was to come thereafter; but are not broadly representative of the Middle Ages.
[458] St. Anselm, _Epist._ lib. iii. 41, _ad Fulconem_ (Migne, _Pat. Lat._ 158, col. 1192). So Roscellin showed in his own case how problems primarily logical could pass over to metaphysics or theology. Likewise, although on the other side of the controversy, one, Odo of Tournai, a good contemporary realist, found realism an efficient aid in explaining the transmission of original sin; since for him all men formed but one substance, which was infected once for all by the sin of the first parents. Cf. Hauréau, _Hist. de la philosophie scholastique_, i. pp. 297-308; De Wulf, _Hist. of Medieval Philosophy_, p. 156, 3rd ed.
[459] Abaelard, _Hist. calamitatum_, chap. 2.
[460] _Ante_, Chapter XXV .
[461] _Ante_,