To unfold the secret laws and relations of those high faculties of thought by which all beyond the merely perceptive knowledge of the world and of ourselves is attained or matured, is a object which does not stand in need of commendation to a rational mind.

Meaning of the quote

This quote from Irish mathematician George Boole is saying that understanding the complex ways our minds work to gain knowledge about the world and ourselves is an important goal that doesn't need to be argued for. Our rational minds can already see the value in studying the hidden rules and connections behind our highest thinking abilities.