Likewise, different philosophers and statesmen have designed different lists of what they believe to be natural rights; almost all include the right to life and liberty as the two highest priorities. H. L. A. Hart argued that if there are any rights at all, there must be the right to liberty, for all the others would depend upon this. T. H. Green argued that “if there are such things as rights at all, then, there must be a right to life and liberty, or, to put it more properly to free life.”[7] John Locke emphasized "life, liberty and property" as primary.