When a truth is necessary, the reason for it can be found by analysis, that is, by resolving it into simpler ideas and truths until the primary ones are reached.
The problem of distinguishing prime numbers from composite numbers and of resolving the latter into their prime factors is known to be one of the most important and useful in arithmetic.
Occasionally we have to interpret an international treaty - one, perhaps, affecting airlines and liability for injury to passengers or damage to goods. Then, of course, we have to look to the precedents of other member nations in resolving issues.
One of the great questions of philosophy is, do we innately have morality, or do we get it from celestial dictation? A study of the Ten Commandments is a very good way of getting into and resolving that issue.
Peace is a never-ending process, the work of many decisions by many people in many countries. It is an attitude, a way of life, a way of solving problems and resolving conflicts.