Is there intelligent life on other planets?

I think it is certain that there is intelligent life in this universe, but the likelihood of that life coming to Earth is practically nil.

Apes rank above dogs in intelligence.

He is a man of intellect.

It is important to have intellectual curiosity.

There is no such thing as the right speed for intelligent reading.

I enjoy intellectual conversations.

Everyone has his intellectual desire; mine is to escape life as I know it.

Everyone has his intellectual desire.

We adults shouldn't destroy the intelligent and creative capacity of children.

Debate is an academic game between the affirmative and the negative.

The chimpanzee is an intelligent creature, capable of solving simple problems.

Chess is a highly intellectual game.

She is very intelligent.

Tom is more intelligent than Mary.

Tom is intelligent.

Mary is intelligent, isn't she?

Tom isn't as intelligent as Mary.

Tom isn't as intelligent as you.

I don't think Tom is intelligent.