The Meaning of Freedom. Columbia historian Eric Foner traces the shifting definition of American liberty in USCâs sixth annual Law and Humanities Distinguished Lecture. November 1, 2007. When it comes to freedom in America, thereâs no single lasting definition, according to world-renowned historian Eric Foner.
The first symptoms of myasthenia gravis may be: 1  Weakness of the eye muscles. 2  Difficulty in swallowing. 3  Slurred speech.
Muscle weakness caused by myasthenia gravis worsens as the affected muscle is used repeatedly. Because symptoms usually improve with rest, your muscle weakness may come and go. However, myasthenia gravis symptoms tend to progress over time, usually reaching their worst within a few years after the onset of the disease.