An axiomatic system establishes a reverberating relationship between what a mathematician assumes (the axioms) and what he or she can derive (the theorems). In the best of circumstances, the relationship is clear enough so that the mathematician can submit his or her reasoning to an informal checklist, passing from step to step with the easy confidence the steps are small enough so that he cannot be embarrassed nor she tripped up.
David Berlinski
Source: The Advent of the Algorithm: The 300-Year Journey from an Idea to the Computer, Pages: 49..50
The self-righteousness and other ego-puffery that makes missionaries and evangelists out of Christians is in truth a measure of how far they are from even the one thing they think is most certainly true, i.e. the confidence that they are truly Christians.
It takes Strength, Courage and Confidence in which every experience you look fear in the face, you are able to say to yourself…I’ve lived through this Horror, I can take the next thing that comes along. You must do the thing you think you cannot do!