Locke's concern for a legislature that serves for too long a time is a good example of his practicality. We have discussed Locke's faith in human rationality, but now we should note that this faith is tempered by a caution about people's natural appetites. If a legislative is put in the position where it can legislate for its own benefit, Locke believes that it may well succumb to that temptation.
Locke continues to focus on property in this section. He notes that although an officer may have the power of life and death over soldiers in his group (to protect the common good), he has no power over that soldier's property--the soldier's property is, in some ways, more sanctified than the soldier's life. We have seen this argument appear before, and we will see again several more times before we reach the end of the Treatise.