"[W]e are tempted to draw a problematic conclusion: there could be entities who do have minds but who cannot tell us what they are thinking... because they have no capacity for language... [M]inds are the ultimate terra incognita, beyond the reach of all science and—in the case of languageless minds—beyond all empathetic conversation as well. ...[H]umility ought to temper our curiosity. Don't confuse ontological questions (about what exists) with epistemological questions (about how we know about it). We must grow comfortable with this wonderful fact about what is off-limits to inquiry."