Definition.com
Certainty is having the highest degree of credibility, either intrinsically or as a result of argument.
Definition.com
Certainty is, along with security, such that a free man is by necessity insecure and a thinking man by necessity uncertain.
Definition.com
Certainty is a most absurd foible. If one is in the right, it lessens the triumph, if one is in the wrong, it adds shame to the defeat.
Definition.com
Certainty is a mental state, a feeling like anger or pride that can help guide us, but that doesn't dependably reflect objective truth.
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