This book is much more about the intellectual errors of humans than the intellectual feats of animals.

Question: What's the most complex and challenging intellectual feat ever achieved by human beings and who did it?

With his mastery of Vulcan logic, he had proven himself capable of some pretty amazing intellectual feats.

Obviously he could not make head or tail of the map; obviously he regarded map-reading as a stupendous intellectual feat.

They can mimic Man's intellectual feats superbly well.

"A most remarkable intellectual feat," editorialized the Transcript.

This seems an impressive intellectual feat.

Soon your baby will learn a meaningful word which, when you think about it, is an amazing intellectual feat.

This cluster of foreign addresses is not the least remarkable of Roosevelt's intellectual feats.

Nevertheless, what has been accomplished is a major intellectual feat.