summarise:

All that can be done is to set out some of the principles which ought to be applicable to such cases. As elsewhere in the law of property, the distinction between movables and immovables dominates the law. Three further aspects should be kept clearly distinct, however.

This passage discusses the need to establish principles for cases involving property, with a focus on the distinction between movables and immovables. It also emphasizes the importance of distinguishing three aspects related to property law.