How well does Google Image Search handle concepts? Click the following images to enlarge.
A Google Image search for "the human soul":
Does it match your mental image? Outer space, religious rites, creepy shapes and exactly one almost certainly unfunny cartoon.
A search for "regret":
I'd be depressed if my world was perpetually dimly lit and monochromatic.
Finally, I'm quite disappointed by the results for "truth":
And speaking of Image Search, here's somebody I hope never to meet:
30 minutes ago