In Into the Wild, what are some quotes that support the idea that Chris McCandless is foolish?

The
opening interactions between Chris McCandless and Jim Gallien hold some solid quotes that
support the idea that McCandless is more foolish than adventurous. Readers are told that Gallien
is an accomplished woodsman, so he knows how to survive in the Alaskan wilderness, and he knows
that it is a difficult thing. One of things that Gallien reported to author John Krakauer is
that McCandless was not properly equipped for the sort of "adventure" that McCandless
was hoping for:

He wasnt carrying anywhere near as much
food and gear as youd expect a guy to be carrying for that kind of trip, Gallien
recalls.

Gallien points this out to McCandless and even
offers to drive him into town and help him properly supply. McCandless is so foolish and set
upon the idea that he will be fine that McCandless turns down the offer:

Gallien offered to drive Alex all the way to Anchorage, buy him some
decent gear, and then drive him back to wherever he wanted to go.

No,
thanks anyway, Alex...