  We will briefly review the definition and classification of classical and
quantum singularities in general relativity. Examples of classically singular
spacetimes that do not have quantum singularities will be given. We will
present results on quantum singularities in quasiregular spacetimes. We will
also show that a strong repulsive "potential" near the classical singularity
can turn a classically singular spacetime into a quantum mechanically
nonsingular spacetime.
