What features of Roman laws, education, scientific and religious life are close and understandable to modern people?

This is the existence of an ordered system of law (Roman law became the basis for most of the legal codes of Europe in the Middle Ages and Modern times, as well as a model for them), the availability and even compulsory school education (at least for the children of free people). One can also point to the practical nature of Roman science (expressed in the widespread use of scientific data in urban planning, the construction of roads and utilities, agriculture), to the deep piety of the Romans, which became a model for many subsequent eras.