Full Idea
I may well need experience to acquire the concepts needed for knowledge of the a priori, such as the concept of a colour.
Gist of Idea
The concepts needed for a priori thought may come from experience
Source
Robert Audi (Epistemology: contemporary introduction [1998], IV p.103)
Book Reference
Audi,Robert: 'Epistemology: a contemporary introduction' [Routledge 1998], p.103