On January 4, 1799, Aaron Burr wrote to his daughter Theodosia, then 16, about the advantages of good presentation in the world:
There is nothing more certain than that you may form what countenance you please. An open, serene, intelligent countenance, a little brightened by cheerfulness, not wrought into smiles or simpers, will presently become familiar and grow into habit. A year will with certainty accomplish it.
Avoid, for ever avoid, a smile or sneer of contempt; never even mimic them. A frown of sullenness or discontent is but one degree less hateful.