 In light of these and other objections, many have offered different defenses of private property. These justifications depend neither on accepting a prior thesis of self-ownership, nor on the affiliated thesis that self-ownership rights can be extended outwardly through labor. Instead, these arguments point to the moral importance of people having security over external resources, whether this is understood in terms of support for political and civil liberties (Gaus 2010), our ability to be project pursuers or purposive agents (Lomasky 1987; Mack 2010), or the ability to be the authors of our lives (Tomasi 2012).