I have heard some presentations from MSFTies and blogs that followed that quotes Lincoln as saying “I didnt have time to write you a short letter so I wrote you this long one instead”

It seems that the people who are re-presenting those topics are using the same quotes again and again.

Lets get the facts straight: It was Mark Twain (1835 - 1910), US humorist, novelist, short story author, & wit who said that and NOT Lincoln.