He is recognized as the top person in that field.

He strongly asserted that he is not a racist.

He said he couldn't agree with the views of the revisionists.

He was promoted to the chief operating officer of the company.

He was appointed as the chief financial officer of our company.

He was appointed as the chief executive officer of the company.

He always keeps the proverb 'Do not make friends with those who are not like you' in mind.

He is the chief technical officer of our company.

He is active as the chief information officer of our company.

He said, 'Heaven helps those who help themselves,' and tried to solve the problem on his own.