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

He often thinks about problems from a humanitarian perspective.

The theory of harmonic oscillators is a fundamental concept in physics.

He is acting based on humanitarianism.

We believe that all people should be treated based on the spirit of egalitarianism.

The European water vole is a small mammal native to Europe.

He likes to take a walk in the park at dusk.

He understands the meaning of the proverb 'Teaching is half learning', which means that teaching leads to one's own learning.

He decided to make a name for himself by starting his own company.

Haku is good at counting numbers.