He was, moreover, always a close and intelligent observer, and many of his memoranda are of scientific value.

My hypothesis is that among intelligent observers we do not expect you to occupy a special place.

For the past 175 years, the planet Earth has been under systematic close-range examination by living intelligent observers from another planet.

Any intelligent observer should have realized that the administration was completely unprepared for this war.

He was a great reader, with a very retentive memory, and a quick, intelligent observer.

As any intelligent observer can see, this will never be the case.

The intelligent observers are the dark-matter creatures.

The father and son preserved a profound silence towards each other, where an intelligent observer would have expected cries and tears.

I believe he was the most intelligent observer and judge of ballplayers ever.

In the spring of the year, a very intelligent observer had occasion to visit many places in the island of Savaii.