Anyway, besides discovering America, re-Christianizing the European continent, beating the snot out of the Vikings for good, and producing Dave Matheny, the Irish have had more than their share of hard times too: do a google search on "Penal Laws" and "The Great Hunger" (I refuse to use "google" as a verb; some day I'll do a post on slang.)
Now I ask: breatheth there a soul so benighted that he knoweth not Murphy's Law?
IF ANYTHING CAN GO WRONG, IT WILL.
This, as a philosophical statement, is self-proving, thusly:
1. The statement "If anything can go wrong it will" is a thing.
2. Therefore it itself can go wrong.
3. Therefore things can sometimes go right.
4. Experience proves statement #3.
Now of course this is only Murphy's first and main Law. There are many many more; I have seen sets of Murphy laws as derived from engineering, theater, housework, and so on.
Some other general Murphy Laws are:
Things which cannot possibly go wrong will do so anyway.
Everything will go wrong all at once.
Everything will go wrong in the direction of greatest possible harm.
If something looks right, it is probably wrong.
If something looks wrong, it is wrong.
An error which has been detected and corrected will be found to have been right in the first place.
There are commentaries on Murphy's Law by other Irishmen:
"Murphy was an optimist." -- O'Toole
"Things have already gone wrong; they just haven't told you yet." -- McGillicuddy
(Thank-you to Fr. Groeschel for that one)