Societies are kept together by different kinds of glue. Self-interested factors such as the fear of leaving society, and the awareness of various benefits of living with others may play their roles. Yet there are also other factors, such as forms of natural sociability, benevolence and sympathy, solidarity with other members of society, and tolerance with respect to different opinions and values. Sometimes religion is considered helpful for keeping societies together, sometimes it is presented as the very cause of division. The nature, potential and limits of tolerance, sociability, solidarity and the role of religion were discussed by many philosophers in the Scottish tradition, and in particular in the Scottish Enlightenment. The first conference of the new Institute for the Study of Scottish Philosophy (ISSP), to be held in Lausanne (Switzerland) on 8-10 March 2019, will explore these issues.