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8

know not what and going through with
a great quantity of analyses and generalizations
and experiments before one
can so much as get a new branch
fairly inaugurated.

Exact logic was started by Augustus
De Morgan in 1846, who produced a
great variety of necessary reasonings
entirely beyond the scope of the traditional
logic, and in particular
made a considerable investigation of
the logic of relations, of syllogisms
of transposed quantity, and of numerically
definite syllogisms.

In 1847, George Boole, a great genius,