Doubt is an uneasy and dissatisfied state from which we struggle to free ourselves and pass into the state of belief; while the latter is a calm and satisfactory state which we do not wish to avoid, or to change to a belief in anything else.

He applied in 1902 to the newly formed Carnegie Institution for a grant to write a systematic book of his life's work. Sylvester who came to admire Peirce's work on mathematics and logic). In 1888 President Grover Cleveland appointed him to the Assay Commission.

In 1934 the philosopher Paul Weiss called Peirce "the most original and versatile of American philosophers and America's greatest logician". Charles Sanders Peirce (pron.