It is remarkable concerning the operations of the mind, that, though most intimately present to us, yet, whenever they become the object of reflexion, they seem involved in obscurity; nor can the eye readily find those lines and boundaries, which discriminate and distinguish them.
Adimenaren eragiketei buruz, nabaria da, nahiz eta guri barneki dagozkionak izan, hala ere, gogoetagai bihurtzen direnean, ilunpean murgilduak diruditela, eta begiak ezin izaten dituela aise topatu eragiketa horiek bereizten eta ezberdintzen dituzten marrak eta mugak.