Thinkers of the West put forward a guiding idea of perfection to be achieved in theoretical as well as in practical philosophy. They argued that the accomplishment of these tasks depended on making refined conceptual distinctions, necessary for the separation of the opinions of the vulgar from true knowledge and of popular moral beliefs from justified moral virtues and rules. In the early modern era philosophers (like Spinoza and Leibniz) were convinced that human reason is capable of cognition sub specie aeternitatis, i.e. from a divine perspective. Later philosophers (like Hegel) believed it to be possible to build philosophical systems of absolute knowledge. If philosophising had been based only on the assumption of infinite human cognit...