I'm sometimes frustrated by folks (mis-)quoting famous quotes without attribution. I recommend bloggers and tweeters do a little Google-icious research, try to get the quote right (it's not always clear what exactly was said, particularly if it's been translated), and either name the person who said it, or remove the quotes and boldly claim it as their own formulation.
This one won't fit as-is in a tweet, and doesn't read as well when chopped up to fit into a tweet (I tried).
If you want to build a ship, don't drum up people together to collect wood and don't assign them tasks and work, but rather teach them to long for the endless immensity of the sea.
-- Antoine de Saint-Exupéry
