Some mischievous people always there. Last several thousand years, always there. In future, also.

It is very important to generate a good attitude, a good heart, as much as possible. From this, happiness in both the short term and the long term for both yourself and others will come.

If you have a particular faith or religion, that is good. But you can survive without it.

Even when a person has all of life's comforts - good food, good shelter, a companion - he or she can still become unhappy when encountering a tragic situation.

The important thing is that men should have a purpose in life. It should be something useful, something good.