Around the time of the Terran Caesar Augustus, a Martian artist had been composing a work of art. It could have been called a poem, a musical opus, or a philosophical treatise; it was a series of emotions arranged in tragic, logical necessity. Since it could be experienced by a human only in the sense in which a man blind from birth might have a sunset explained to him, it does not matter which category it be assigned.
Robert A. HeinleinThe most noble fate a man can endure is to place his own mortal body between his loved home and the war's desolation.
Robert A. Heinlein