She made that plain, over and above his own powers of observation.

We had nothing to do but to look on and thus cultivate our powers of observation.

"It will be a lot about the power of observation," she said.

You'd just have to trust my powers of observation, such as they are.

So I say, rock on with your powers of observation.

All four children took part in a final round to test the powers of observation.

One was all he needed to bring into play his keen powers of observation.

I want you to concentrate on it all your powers of observation and memory.

No, the alternative was to surround himself with people who used their powers of observation the way he did.

"Use your powers of observation," his father had said to him at the train station.