He never loses his curiosity; he is, as it were, an eternal youth.の英語

Young people were always a sealed book to him.

He has no common sense—he always does silly things.

However it may be with other people, he is quite above suspicion.

From first to last his interest never flagged.

But for his painstaking investigations this would have been consigned to lasting oblivion.

He led a solitary life, turning his back on the world which would not accept him.

He had no insight into human nature.

He was lost to pity [shame].

Though he is young, he never wastes time.

He was not ashamed to admit his ignorance.

You shouldn't be surprised to hear that he has been elected President.

His success in the election for President is nothing to be surprised at.

He applied himself to his studies, ignoring the racket made by people around him.

He is as brave a man as ever breathed.

He was uncritical of his son's conduct.

I was in complete ignorance of his intentions.

Although he didn't speak, I felt a certain warmth in his manner.

Although he is old, he is still young in spirit.

His total disregard for the feelings of others was his condemnation.

He is afraid that his uncle will cut him out of his will.

His manner, if patronizing, was not unkind.

I certainly haven't done anything to earn [incur] his enmity.

Since he considers no one but himself, he doesn't take care of others.

He is not the shy boy he used to be.

He dismissed the thought as utterly incredible.

Although he was frowned upon as an oddity, he devoted himself to his research single‐mindedly.

He carried the audience with him from beginning to end.

His mind is too occupied with his own affairs.

He was too cautious to venture upon such a dangerous expedition.

In spite of their united opposition he stoutly refused to budge from his lone position.