No matter of fact can be mathematically demonstrated, though it may be proved in such a manner as to leave no doubt on the mind.


The Elements of Logic, IV, John W. Parker & Son. 1853


No matter of fact can be mathematically demonstrated, though it may be proved in such a manner as to leave no doubt on the mind.

No matter of fact can be mathematically demonstrated, though it may be proved in such a manner as to leave no doubt on the mind.

No matter of fact can be mathematically demonstrated, though it may be proved in such a manner as to leave no doubt on the mind.

No matter of fact can be mathematically demonstrated, though it may be proved in such a manner as to leave no doubt on the mind.