That benefit has to be offset by the harm. If he is getting that $1,000 to help a logging company gain the rights to clearcut old growth forest, then his additi

That benefit has to be offset by the harm. If he is getting that $1,000 to help a logging company gain the rights to clearcut old growth forest, then his additional hour may be net harm, even if he donates the $1000 to help clean up a beach. At the big dollar amounts, are you going to be able to make the ethical choices to only choose cases that do not do net harm? Perhaps, but not guaranteed, and one "no" to one client can lose you a big client and cause trouble getting the next.