"Purely Personal Prejudices" http://books.google.com/books?id=DLcEAQAAIAAJ&q=%22The+difference+between+patriotism+and+nationalism++is+that+the+patriot+is+proud+of+his+country+for+what+it+does+and+the+nationalist+is+proud+of+his+country+no+matter+what+it+does+the+first+attitude+creates+a+feeling+of+responsibility+but+the+second+a+feeling+of+blind+arrogance+that+leads+to+war%22&pg=PA228#v=onepage
Strictly Personal (1953)
“The difference between treason and patriotism is only a matter of dates.”
Source: The Count of Monte Cristo
Help us to complete the source, original and additional information
Alexandre Dumas 123
French writer and dramatist, father of the homonym writer a… 1802–1870Related quotes

I'm Telling You for the Last Time (1998)
Context: What is a date, really, but a job interview that lasts all night? The only difference is there aren't many job interviews where there's a chance you'll end up naked at the end of it. "Well, Bill, the boss thinks you're the right man for the job; why don't you strip down and meet some of the people you'll be working with?"
“the difference between a rebel and a patriot depends upon who is in power at the moment.”
Source: The Sands of Time

“Optimists and pessimists differ only on the date of the end of the world.”
p, 125
Unkempt Thoughts (1957)

Letter to George Bainton, 15 October 1888, solicited for and printed in George Bainton, The Art of Authorship: Literary Reminiscences, Methods of Work, and Advice to Young Beginners (1890), pp. 87–88 http://books.google.com/books?id=XjBjzRN71_IC&pg=PA87.
Twain repeated the lightning bug/lightning comparison in several contexts, and credited Josh Billings for the idea:
Josh Billings defined the difference between humor and wit as that between the lightning bug and the lightning.
Speech at the 145th annual dinner of St. Andrew's Society, New York, 30 November 1901, Mark Twain Speaking (1976), ed. Paul Fatout, p. 424
Billings' original wording was characteristically affected:
Don't mistake vivacity for wit, thare iz about az mutch difference az thare iz between lightning and a lightning bug.
Josh Billings' Old Farmer's Allminax, "January 1871" http://books.google.com/books?id=sUI1AAAAMAAJ&pg=PT30. Also in Everybody's Friend, or; Josh Billing's Encyclopedia and Proverbial Philosophy of Wit and Humor (1874), p. 304 http://books.google.com/books?id=7rA8AAAAYAAJ&pg=PA304
Source: The Wit and Wisdom of Mark Twain

“…shall we say that the difference between a vegetarian and a cannibal is just a matter of taste?”
"The Idolatry of Politics", New Republic, 1986-June-16, page 31.

To Leon Goldensohn (25 June 1946). Quoted in "The Nuremberg Interviews", Leon Goldensohn, Robert Gellatel (2004).