Professor Karl Weick was an iconic founder of the field of organizational behavior. Starting with his seminal book, The Social Psychology of Organizing, which was published in 1969, Weick's ideas had enormous influence, shaping organizational scholarship over the next decades and to this day. He focused on the processes of organizing rather than on organizations per se, suggesting that the insights into those processes give us important leverage to both understand and affect life in organizations. In his book, he introduced the seminal concept of "sense-making," which he defined as "the ongoing retrospective development of plausible images that rationalize what people are doing." Weick's ongoing research focused on how individuals engaged in making meaning and how that meaning-making affected important outcomes in organizations. His book has been cited more than 35,000 times, and his other work on the topic has been cited more than 13,000 times. His pioneering work has instilled a highly influential perspective on the people attempting the organizing work that goes into organizations.