Conjectures (by means of induction and of analogy) can be suffered in an empirical science of nature only, yet even there the possibility at least of what we assume must be quite certain.
Natur zientzia enpirikoan bakarrik ameti daitezke konjeturak (indukzioari eta analogiari esker); baina orduan ere, baldintza batekin, ezen nik onartzen dudanaren posibilitatea izan dadila osoro ziurra.