Full Idea
Among scholastics the primary agreement is that what primarily exist are substances. The primary disagreement concerns the nature of their changeable properties. Are they real accidents, or mere modes of substance?
Gist of Idea
The biggest question for scholastics is whether properties are real, or modes of substances
Source
Robert Pasnau (Metaphysical Themes 1274-1671 [2011], 13.1)
Book Reference
Pasnau,Robert: 'Metaphysical Themes 1274-1671' [OUP 2011], p.244