He is a selfless person, always acting for the benefit of others.

We must also respect the opinions of others.

He always keeps a smile on his face.

I couldn't understand his actions.

He started to act immediately.

He is an unselfish person, always acting for the sake of others.

His actions are completely coming from selflessness.

Humans can make mistakes.

This world where people live is beautiful, and sometimes harsh.

This old document details the lifestyle of humans.