caustic(Noun) Any substance or means which, applied to animal or other organic tissue, burns, corrodes, or destroys it by chemical action; an escharotic. caustic(Noun) The envelope of reflected or refracted rays of light for a given surface or object.
Answered by Aslan. As Atticus has explained to Scout many times about this, He is doing this becasue he values equailty and justice. He believes that everyone is equal and therefore just because Tom Robinson is black, doesn't mean that he should not defend him.e says to Scout many times, if he did not defend this man, he could never tell Jem or her (Scout) not to do something. He has to set a good example for his children and if he expects them to do something or follow certain values, then he must display them first.
Atticus is defending him because he doesn't think he could have any  self-respect at all, or tell his children to do anything if he  didn't. Also, the case was assigned to h â¦ im.(He was appointed to by  Judge Taylor.)    Tom Robinson is accused of rape.   Atticus feels that he should defend Tom because he knows Tom is  innocent and believes that this is the one case in his life that he  is meant to make a difference by taking.tticus is defending him because he doesn't think he could have any  self-respect at all, or tell his children to do anything if he  didn't. Also, the case was assigned to h â¦ im.