Sentence:  Our conception of these practical consequences is for us the whole of our conception of the object [...] This is the principle of Peirce, the principle of <WSD>pragmatism</WSD>. 
Meaning of the word marked with <WSD> tags:  The idea that beliefs are identified with the actions of a believer, and the truth of beliefs with success of those actions in securing a believer's goals; the doctrine that ideas must be looked at in terms of their practical effects and consequences.