Lesley Stahl profiles House Majority Leader Eric Cantor about his life and the recent bipartisan wars in Congress. Mountain climber Alex Honnold seems to defy gravity by scaling sheer, steep rock faces with no rope and apparently no fear. Lara Logan reports. In his first interview about his criminal fraud, Sam Eshaghoff tells how he was able to take the SAT and ACT college admissions exams for others who paid him up to $2,500 per test. Alison Stewart reports. The Vatican Library holds some of the oldest and most precious works of art and treasure known to man and the "60 Minutes" cameras got to see the best of the best; Also, Bob Simon steps back in time and got rare access to monks in ancient monasteries on on The Holy Mountain, Mt. Athos.