The principal act of courage is to endure and withstand dangers doggedly rather than to attack them.
All animals except man know that the principal business of life is to enjoy it.
It took the Metropolitan Museum of Art nearly 50 years to wake up to Pablo Picasso. It didn't own one of his paintings until 1946 when Gertrude Stein bequeathed that indomitable quasi-Cubistic picture of herself - a portrait of the writer as a sumo Buddha - to the Met principally because she disliked the Museum of Modern Art.
Light God's eldest daughter is a principal beauty in a building.
The principal contributor to loneliness in this country is television. What happens is that the family 'gets together' alone.