Perception (n.) in its lowest degree puts the boundaries between animals and the inferior ranks of creatures.
Perception (n.) and having ideas are the same thing, so asking when a man first has ideas is just asking when he first perceives.
Perception (n.) is the first step toward knowledge and the inlet of all its materials; the fewer and duller the senses, the farther the creature from knowledge.
Perception (n.) happens in the mind, not the flesh: fire may burn our bodies with no more effect than it has on a log, unless the motion reaches the brain.
Perception (n.) is something no discourse can teach: whoever reflects on what he does when he sees cannot miss it, and whoever does not, all the words in the world cannot give it him.