The philosopher must be able to stand back and observe science and nature with an impartial eye.
The stout boy was standing in the doorway, observing him with an attentive eye.
"Nice parade work," the fighter noted, observing the wolves with a critical eye.
It's about taking all the little everyday things and observing them with a critical eye; building up a scrapbook which you can draw on.
For example, 3M scientists regularly observe hospital procedures with an eye toward developing new markets.
In the land of Israel, she also worked outdoors, observing those around her with a clear, impartial eye.
The magistrate observed me with a keen eye, and of course drew an unfavourable augury from my manner.
"He's been tough when he had to be," John observed with an eye to his partner and soon-to-be son-in-law, which thought almost occasioned a chill.
He observed Washington life with a sharp eye, and he had a swift pen.
While taking care of all the dirty little jobs of the office, she observed with a sharp eye the social theatre which takes place during meetings.