Full Idea
If one never in fact grasps any necessary connections between anything, it is hard to see what reasoning could possible amount to.
Gist of Idea
Perceiving necessary connections is the essence of reasoning
Source
Laurence Bonjour (In Defence of Pure Reason [1998], §4.3)
Book Reference
Bonjour,Laurence: 'In Defense of Pure Reason' [CUP 1998], p.110