I thought it would be fun to see who deserves the credit for one of my favourite sayings….
The internet thinks
… a diary entry dated September 21, 1863 written by Sir Mountstuart E. Grant Duff, who was a Scottish politician and held important administrative posts in India was published in 1897 [FSG1]:Met at the house of the Rev. C.K. Paul, at Stourminster Marshall, Father Strickland, an English Jesuit, who said to me – “I have observed, throughout life, that a man may do an immense deal of good, if he does not care who gets the credit for it.”
And somehow didn't find the first time: