The ancient Greek philosopher Heraclitus said, "One cannot step into the same river twice". The world is always changing like a river, and the past can never come back. Indeed, in the eyes of many people, the past is the past. You can't go back to the past, let alone start all over again, just as you can't go back to your childhood.

Similarly, the future has not yet arrived, and the future belongs to the unknown, and neither you nor I can grasp it.

But there are no absolutes in the world, and there are anecdotes in astronomy. Through the astronomical telescope, Saturn you see now is the scene when the planet was first formed, which was two million years ago, when human beings were just born on the earth; In a cosmic black hole, time does not exist at all, and even light cannot escape.

People are always amazed at the greatness of time, past, present and future.

Standing in the long river of time, we look back on the past, and the river slowly flows away, taking away our breath.

Standing in the long river of time, we looked up and the water came slowly, beating our hearts.

Time is always unhurried and does not favor you and me.

But time makes us feel different.

Children always live in the future. They are no more responsible for their past actions than themselves. Their psychological idea is to have a snowball fight with their playmates tomorrow. How can I get my father to give me his long-cherished electronic toy on his birthday? How to express your love to the girl sitting next to you? They also have troubles, and troubles are in the future.

Old people always live in the past. Their future has not changed much, but the past is worth pondering over. The days are getting dull day by day. I remember last year, when four generations lived together for the New Year, I had a room full of children and grandchildren. Raise a glass and drink with your lover, it was half a century ago, but it seems like yesterday, and my heart is warm; The intoxicating first love made his heart beat faster at this time. The more distant the past, the more blurred by time, but the more touching it is to recall.

People who walk upright may live more in the present. They have too many things to deal with, and the past and the future leave them too busy to take care of.

There is actually another saying about the future, the past and the present.

What we can't get has been lost. At this time of possession, time and our emotions are linked. This Zen machine also needs us to understand for a lifetime.

Sometimes I think that man is a magical time machine, and there is no fixed number in the past, present and future. Thought takes you through, and life reflects different light.