Why are you so insistent on trying to find an atheist "mother Theresa?" It sounds like you believe as a group atheists are morally inferior.
Might want to read up on the ethical culture movement of the 19th - 20th century and related topics...
Ok This is my last b/c you're reading your own negative feelings into my words.
1) Post attacking Mother Teresa.
2) Hypocrite Atheist attacking her have done nothing for humanity besides bloviating about things they don't like.
3) You defend Atheist in general.
4) I asked for proof. You name Gates and Buffet.
I"m not not discounting Gates or Buffet or other philanthropist. They do important work but they don't dedicate their lives to service.
5) 6 words then what about Trump.
Who care about Trump? You still can't name one Atheist who has devoted their life to serving humanity. It's easy to give money.. we all do it.
I can give you a list of a dozen people right now who are living their conscience, serving people in remote places. They are better people than I am:
https://flyawa.org/missionaries/
These people preach through service. They have critical medical, engineering skills and most importantly compassion. They serve people of any religion, race or creed for free.
Here is a better organized secular organization that does even more:
http://www.doctorswithoutborders.org/