What are laws?  It is stated that law is better than the rule of any individual.  Laws are a symbol that a force regulates our behaviors, since we are social citizens, we structure the society, from which helps society cooperates as a whole. Nowadays, we obey laws, however, there is a doubt whether our laws are 'just', and whether we should obey the just laws and disobey the unjust laws.  In this iusse, we are expected to balace the nature of laws and the attitude to laws. On these two parts, from my point of view, I support the proposal that we shoud obey the just laws and diobey the unjust laws.
     Someone would well likey to be suspicious of distinguishing the laws from just ones to unjust ones, in other words, they may suspect the possibilities to evaluate the sense of justice of laws.   Are there some standards to define the sense of justice of laws?  Yes.  Laws are just, says Aquinas, in three conditions, when they are ordained to the common good, when they are within the lawmakers' limits of power, when the burdens imposed are in due proportion with a view to the common good. We need these kind of laws to help us manipulate our unjustifiable desires, to help society control its order, dispute settlements and proceed social changes.
     However, even if we have the stanards to measure the characteristcs of laws, is it neccessary for us to obey the defined just laws?  As we know,  'just' and 'unjust' are relative concepts, once the 'just' is ditorted,  there is no need for us to obey the so-called just laws.  For example, an abitrary ruler owned a legislation power of the whole co untry, he made laws only to meet his and aristocracy's demand, and regulated them as just laws.  In autocratic age, is was more than just normal, yet this kind of 'just' laws did not cater to the public. The real problem is under which circumstance and to what extent we are bound to comply the unjust arrangements.  If the laws are just to the unjust society, we are expected to change the society and make new rules.
     In a just society, the just laws help society control its order, dispute settlements and proceed social changes, whereas unjust laws are possible to ruin the civil rights.  When the laws deviate from publicly reconized norms,  an appeal to the society's sense of justice is presumably possible to some extent.  Additionally, unjust laws would intend to disorder the operations of state apparatus, resulting in the people's disatisfactions to the country, the disabilities of governments, chaos filled in society, and finally reach the end.
     Even if the proccess of  judging the sense of justice of laws needs a long time, and of establishing the standards of judgement costs lots of money and manpower, it is still worthy to obey just laws in just society.