Raising children is an uncertain thing; success is reached only after a life of battle and worry.
DemocritusNothing, they say is more certain than death, and nothing more uncertain than the time of dying
Thomas PaineGut instinct," Jeremy wheezed. "Your gut's been shot," Mike pointed out, but he looked uncertain.
The Morning StarAlford was going to start this fast the same way he had started everything else, alone and uncertain
Salt: A Novel