Abstract: objective of universal principles for digestion paradox. The typical analysis method, find common cause. The analysis result was 11 (including the famous paradox is still considered the ". franklin without a person can make everybody convincing explicitly proposes the paradox of reasoning, and any fallacy paradox liar paradox termination, can cause) from the following principles explaining violation of thinking in handling the relationship between the concept, the logical thing is not the first thing on the logic and confused. According to the principle of the straight, through the analysis of the specific example Narrows definition, not all the straight predicate definition contains a vicious circle. Conclusion the principle is to prevent the paradox and an effective principle, the article, the principle that generality, General to the cause of contradiction in the straight predicate definition (depends) and banned the use of it in mathematics, lack of logic based : paradox, Invalid reasoning, The straight predicate, Logic has not confuse principle