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.
from wikipedia the free encyclopedia atticus finch is a fictional character in author harper lee s pulitzer prize winning novel of 1960 to kill a mockingbird a preliminary version of the character also appears in the novel go set a watchman written in the mid 1950s but not published until 2015 atticus is a lawyer and resident of the fictional maycomb county alabama and the father of jeremy jem finch and jean louise scout finch lee based the character on her own father amasa coleman lee an alabama lawyer who like atticus represented black defendants in a highly publicized criminal trial