I greatly admire Winston Churchill for what he had done to win the second world war - he was a great man who had a simple yet brilliant philosophy on things.
Albert Einstein is another figure I admire for his contributions to Science as a whole - he truly was a great Scientist with a vast knowledge in all fields.
I also admire Malcolm X - although MLK was much more influential in civil rights, Malcolm X chose to oppose King's view and believe that he had to fight for what he believed in - I honestly agree with this philosophy more, despite the fact that it was less efficient in gaining civil rights.