The Alliance is important even with the evil — You cannot live in the river and be at enmity with the crocodile
Cooperation is the thorough conviction that nobody can get there unless everybody gets there.
Cooperation is not an unmixed blessing: when snowflakes cooperate, they tie up traffic.
Cooperation is everything — freckles would make a nice coat of tan if they'd get together.
Exchange is the act in which the specific social character of each producer's labor asserts itself.
Exchange is predicated on the idea that objects such as a hammer and a screwdriver can be exchanged because there is something in common and some means of comparison between them.
The Favor is also good for the giver — to accept a favor from a friend is to confer one
15 concepts in this pillow book.