Modernization goes through two main phases, each of which brings distinctive changes in people's worldviews. The Industrial Revolution was linked with a shift from traditional to secular-rational values, bringing bureaucratization, centralization, standardization and the secularization of authority. In the post-industrial phase of modernization, a shift from survival values to self-expression values, brings increasing emancipation from both religious and secular-rational authority. Rising mass emphasis on self-expression values makes democracy increasingly likely to emerge. Although the desire for freedom is a universal human aspiration, it does not take top priority when people grow up with the feeling that survival is uncertain. But when survival seems secure, increasing emphasis on self-expression values makes the emergence of democracy increasingly likely where it does not yet exist, and makes democracy increasingly effective where it already exists.