Without knowledge of worldly matters, social life is difficult.

This problem is very difficult.

I'm always amazed by his extensive knowledge.

He is living a simple life.

My life has become busy recently.

We should take responsibility as part of society.

I am very interested in social science.

Did you know this trivia?

He is widely recognized as an intellectual in that field.

By learning a one-line fact every day, your knowledge will increase.