Expression: Ships that pass in the night

[Jacob]

please tell a sentence for the expression ships that pass in the night

Jacob

[Conchita]

Ships that pass in the night
And speak one another in passing,
Only a signal shown
And a distant voice in the darkness;
Thus on the ocean of life,
We pass and speak one another,
Only a voice and a look;
Then darkness again and a silence.

H.W. Longfellow

Beautiful, isn't it? It's also a good example of what often happens in forums such as this. :(

The idiom is further illustrated in the following thread:

Idiom: two ships that pass in the night
http://www.english-test.net/forum/ftopic5853.html