Abstract
The aim of the paper is to elucidate the question: what can be said about the quantum creation theories from the point of view of the classical singularity theory? To this end singularity theorems are critically examined, and the nature and classification of singularities briefly discussed. An observer approaching a quasi-regular singularity has no warning of the imminent danger, and he would never think to look for any quantum cosmology. For security reasons one could introduce a quantum censorship hypothesis which would forbid the existence of singularities not protected by the Planck threshold. The creation-from-nothing idea met both in classical and quantum theories is discussed at some length. It is emphasized that the nothingness these theories presuppose is a strongly theory-dependent concept.