He always keeps a smile on his face.

He is zealous about the new project.

He is always dedicated to the pursuit of knowledge.

He is always pursuing the truth.

I'm always amazed by his extensive knowledge.

He is my best friend.

He is my best friend.

His goal was truly a miracle play.

He has a wealth of scientific knowledge and is always excited about new discoveries.

He says 'knowledge is power' and studies hard every day.