Collins's Philosophical Enquiry concerning Human Liberty.
But as soon as this was accomplished the government opened a comprehensive enquiry into the causes of dissatisfaction, which served as the basis of numerous social laws, and led eventually to the establishment of universal suffrage and the substitution in Belgium of a democratic for a middle-class regime.
The bold criticism of Middleton's recently (174.9) published Free Enquiry into the Miraculous Powers which are supposed to have subsisted in the Christian Church appears to have given the first shock to his Protestantism, not indeed by destroying his previous belief that the gift of miraculous powers had continued to subsist in the church during the first four or five centuries of Christianity, but by convincing him that within the same period most of the leading doctrines of popery had been already introduced both in theory and in practice.
The Enquiry does not go beyond an analysis of sense perception, and is therefore more limited in scope than the later Essays; but if the latter are more mature, there is more freshness about the earlier work.
A Free Enquiry into the Causes of the very great Esteem that the Nonconforming Preachers are generally in with their Followers (1673) has been attributed to Eachard on insufficient grounds.