All observers not laboring under hallucinations of the senses are agreed, or can be made to agree, about facts of sensible experience, through evidence toward which the intellect is merely passive, and over which the individual will and character have no control.

In 1872 Wright helped found The Metaphysical Club with other Harvard intellectuals such as Charles Sanders Peirce William James and Oliver Wendell Holmes Jr. Although in general he adhered to the evolution theory he was a free-lancer in thought. In 1852 he graduated at Harvard and became computer to the American Ephemeris and Nautical Almanac.