"We're asking Apple to take the vicious guard dog away and let us pick the lock" — FBI Director James Comey at a House judiciary hearing, referring to a locked iPhone tied to the deadly shooting in San Bernardino, California.
"The journey isn't over. Follow me as I rediscover # Earth!"— Astronaut Scott Kelly in his final tweet from orbit before heading back to Earth after a year in space.
"Austria is not a waiting room for Germany" — Austrian Chancellor Werner Faymann, on his country's decision to accept no more than 80 asylum requests a day at its southern frontier with Slovenia.