My personal thought is that everyone should be treated equally.

He values his private life.

He was born as an illegitimate child and experienced many difficulties.

My grandfather used to till his privately-owned rice field.

He holds a personal grudge against me.

Using the private railway makes commuting very convenient.

Noble gases are known for not participating in chemical reactions.

Looking at that person's behavior, I feel like they have some secret.

The culture of Greece has influenced the world.

Yuki is my best friend.