He strongly believes in egalitarianism.

He claims to be a true democrat at heart.

He is a true optimist, always believing in a bright future.

My sister is a vegetarian and does not eat meat at all.

He always looks at things like a pessimist.

He is always an optimist, believing in a bright future even in difficult situations.

He is known as an absolutist in politics.

He is a perfectionist, so he is very strict about his work.

He is known as an excellent realist.

He is a true humanitarian, always striving to alleviate the suffering of others.