Is there any reason why Lincoln sits the way he does at the memorial?

Question

his left hand is in a fist right leg up look at pictures online to see wha I mean better

Answer 1

its probubly just what the artist at the time pictured him as ,,as far as why that is may be a mystery

Answer 2

The Body language suggests some one under tension and legs Crossed means he's not open to suggestion.

Answer 3

I don't think it's so much the way he sits, but rather by the fact that he is sitting at all.  Most statutes show leaders standing.  Perhaps the sculptor for Lincoln had him sit to show that Lincoln was weary from the civil war and too tired to stand.