Modern interpretations of Aristotelian concepts of knowing, episteme, techne and phronesis, have lately been adopted to study expertise and professions. The article argues that a combination of the three types of knowledge would be useful in development cooperation and that especially phronesis, or practical wisdom, should take the central stage as it combines practice with values. Although values are central in development work, they are currently undermined by technical understandings. The article explored the different forms of knowledge that are used and appreciated within the Finnish development cooperation. The data was drawn from a process of providing topical and rapid scientific inputs to Finnish ministry officials and it was complemented with key-informant interviews. The findings showed that although scientific knowledge was appreciated by the ministry officials, the internal incentive structures of the development administration favoured technical forms of knowledge. Especially results information as well as picking up travelling ideas from the major trendsetters within the field were important in everyday work. The main structural constraints for phronesis to flourish within the department seemed to be a lack of time for learning and reflection. Development is a messy process involving stakeholders with various interests and wicked problems that do not have simple solutions and are inflicted with power struggles. With declining funding and diminishing appreciation from the side of the power holders, the value of knowledge available to improve the quality and effectiveness of development policy and cooperation becomes important to all stakeholders.