I have been studying chimpanzee intelligence both in the laboratory and in the wild (Matsuzawa 2001). Chimpanzees in the wild use and manufacture a wide variety of tools such as twigs to fish for termites or a pair of stones to crack open hard-shelled nuts. Recent studies comparing different communities of chimpanzees have shown that each community has developed its own unique set of cultural traditions. Chimpanzees in the laboratory can also master various kinds of skills including, to some extent, linguistic and numerical abilities. One question arising from these studies concerns the social transmission of knowledge and skills across generations: How and when does such learning occur, and from who to who is it passed? To address these questions, this article briefly summarizes our attempts at synthesizing two distinct approaches to understanding the nature of chimpanzee intelligence: ethological observation in the wild, and psychological experiments in the laboratory. In addition, it will also provide an account of one of the most impressive episodes of learning by an infant chimpanzee from a skillful mother.