In light of the possibility that Belgium could fall apart in coming years this contribution argues that it is time to reflect on a constitution for Flanders: What are the characteristics of a good constitution? A good constitution would entrench fundamental freedoms, which are historically rooted in society. Moreover, it obliges the government to maintain and enforce the laws, preventing abuse of power and corruption. Finally, a functioning constitution stands above temporary interests of partisan politics, and should not be used as a means to encumber future generations with our ideological choices.