Dialogue

 1 Phaedo|      by other men; they do not perceive that he is always pursuing
 2 Phaedo|        began to see or hear or perceive in any way, we must have
 3 Phaedo|     much is clear—that when we perceive something, either by the
 4 Phaedo|    other time?~No, Socrates, I perceive that I was unconsciously
 5 Phaedo|      you can touch and see and perceive with the senses, but the
 6 Phaedo| unchanging things you can only perceive with the mind—they are invisible
 7 Phaedo|     swans? For they, when they perceive that they must die, having
 8 Phaedo|        mankind; for they alone perceive the utter unsoundness and
 9 Phaedo|     more clearly did I seem to perceive that ten is two more than
10 Phaedo|     and myself, have had, as I perceive, no effect upon Crito. And