I may say that the only differences I expect to see revealed between the behavior of the rat and man (aside from enormous differences of complexity) lie in the field of verbal behavior.
A disappointment is not generally an oversight. It might just be the best one can do the situation being what it is. The genuine error is to quit attempting.
A person’s genetic endowment, a product of the evolution of the species, is said to explain part of the workings of his mind and his personal history the rest.
