The sentence is grammatically ambiguous. It could mean
A. Reason born of experience, and knowledge born of experience
OR B. Knowledge born of experience, and also reason.
To me, B makes more sense in context. Reason is the simple application of logical rules, and does not require experience. Knowledge requires experience. Most modern philosophers would say that logic and experience are the only two possible ways to discover truth. However, the author is saying that instinct is stronger than both of them.