Man is a rational animal, and reality dictates that to survive,
man must be rational -- by choice.
Man is a being of free will. Man can choose to think, drift, or evade -- but
choose he must. His thoughts determine: his character, his
values, his emotions, and his actions, and so his thoughts determine his destiny.
As reason is solely the attribute of an individual, and
man's thinking determines his choices and actions, then each man is the
master of his own destiny.
The individual sovereign.