>> bob arum: i think that manny pacquiao is the best fighter that i have ever seen. >> simon: bob arumat fighters, including the greatest. >> arum: i did 25 fights for ali. >> simon: and you're saying... you're saying that manny pacquiao is a greater fighter than muhammad ali? >> arum: yes, he is, because muhammad ali was essentially a one-handed fighter. manny pacquiao really shocks these fighters because he hits equally hard from the left side and the right side. >> simon: most boxers are born poor; manny was born hungry. he grew up in the unpaved alleys of a forlorn city called general santos. his single mother had six children to support. they often missed school to help her sell cigarettes in the streets. but like many youngsters determined to get out of these slums, manny would often disappear. he had a secret. when you started boxing, you didn't tell your mother you were starting boxing, did you? >> pacquiao: no. ( laughter ) she doesn't want me to box. >> simon: she didn't want you to box. >> pacquiao: yes. >> simon: she wanted him to be a priest, he wanted to play basketball.