Can comparative religious ethics do more than compare? Once we have found similarities and differences between different traditions – including similarities within differences and differences within similarities (Yearley 1990) – what then? Mencius was not content to compare Yang Zhu, Mozi and Xunzi; he wanted to form an account of human virtue more adequate than theirs. Likewise, Aquinas’s integration of Augustinian Christianity and Muslim Aristotelianism was no mere articulation of similarities and differences; he aimed to provide a true account of the world and human flourishing, drawing on the wisdom of his two very different teachers. Given our awareness today of the wide-ranging differences across traditions, can we now aim to complete a project like Aquinas’s and Mencius’s own, one that attempts to resolve differences across traditions?
In Albert's view, the impossibility to prove any certain truth is not in itself a certain truth. After all, one needs to assume some basic rules of logical inference to derive his result, and in doing so must either abandon the pursuit of "certain" justification, as above, or attempt to justify these rules, etc. He suggests that it has to be taken as true as long as nobody has come forward with a truth which is scrupulously justified as a certain truth. Several philosophers defied Albert's challenge; his responses to such criticisms can be found in his long addendum to his Treatise on Critical Reason and later articles.
Duhem is also known for his work in thermodynamics, being in part responsible for the development of what is known as the Gibbs–Duhem relation and the Duhem–Margules equation . Duhem thought that from the first principles of thermodynamics physicists should be able to derive all the other fields of physics—., chemistry, mechanics, and electromagnetism.  Duhem, influenced by Macquorn Rankine 's "Outlines of the Science of Energetics",  carried out this project in Traité de l'Énergétique (1911) but was unable to subject electromagnetism to thermodynamic first principles.