A steady application and pursuit are required to this discovery: and there must be a progression by steps and degrees, before the mind can in this way arrive at certainty, and come to perceive the agreement or repugnancy between two ideas that need proofs and the use of reason to show it.
Ahalegin tinkoa eta ekin iraunkorra beharko dira aurkikuntza horretarako; eta apurka-apurka eta mailaka egin behar da aurrera, harik eta, horretara, gogamena ziurtasunera heldu arte eta frogak eta arrazoimena erabiltzea behar dituen bi ideien arteko adostasuna edo aurkakotza hautematea lortu arte.