In all our plans for the future, we are re-defining and we are re-stating our Socialism in terms of the scientific revolution. But that revolution cannot become a reality unless we are prepared to make far-reaching changes in economic and social attitudes which permeate our whole system of society. The Britain that is going to be forged in the white heat of this revolution will be no place for restrictive practices or for outdated methods on either side of industry.

Usually quoted as "the white heat of the technological revolution". Speech at Labour Party conference, October 1, 1963. Labour Party Annual Conference Report, 1963, pages 139-140.