Robert has been a leader in socially responsible investing since 1967. At the same time he also pioneered the use of modern portfolio theory to protect his clients against the losses that are often the result of conventional investment approaches. He started what is now Walden Asset Management in 1975, making it the first socially responsible unit in any bank. He was also a principal architect of the first Calvert Social Investment Fund in 1982. Robert was a leader in the movement to divest from apartheid South Africa. His 1987 testimony in defense of the Baltimore pension funds’ right to divest led to a precedent-setting decision. Robert is also a Harvard Ph.D. in economics, who has taught at Berkeley, Columbia and Harvard and published two books. For almost a dozen years he has been leading and building Robert Brooke Zevin Associates, a socially responsible investment firm as notable for its investment performance as for its social commitments.