Excerpt from Foundation by Isaac Asimov.

HARI SELDON–... born

in the 11,988th year of the Galactic Era; died 12,069. The dates are more commonly given in terms of the current Foundational Era as – 79 to the year 1 F.E. Born to middle-class parents on Helicon, Arcturus sector (where his father, in a legend of doubtful authenticity, was a tobacco grower in the hydroponic plants of the planet), he early showed amazing ability in mathematics. Anecdotes concerning his ability are innumerable, and some are contradictory. At the age of two, he is said to have ...

... Undoubtedly his greatest contributions were in the field of psychohistory. Seldon found the field little more than a set of vague axioms; he left it a profound statistical science....

... The best existing authority we have for the details of his life is the biography written by Gaal Dornick who. as a young man, met Seldon two years before the great mathematician's death. The story of the meeting ...