Serendipity means a "happy accident" or "pleasant surprise"; specifically, the accident of finding something good or useful without looking for it. The word has been voted as one of the ten English words hardest to translate in June 2004 by a British translation company. However, due to its sociological use, the word has been exported into many other languages. In the simplest of words, it means a "happy accident" or a "pleasant surprise".
The first noted use of "serendipity" in the English language was by Horace Walpole (1717–1792).

You know the Greeks didn't write obituaries. They only asked one question after a man died: "Did he have passion?".

[Lying on the grass with Jonathan, outside Sara's house] Maybe we're lying here because you don't wanna be standing somewhere else.

Contrary to popular New York myth the Times is not omniscient.

[commenting on Jonathan's craziness] They should make pills for this.

[commenting on Sara's craziness] They should make pills for this.