Time is like an arrow flying to a single direction constantly,which is presented as yesterday-today-future.In the single flow of time, the value of human has the character of presence,.irreversibility,ideal confront with future and beyond something.that is to say,human is unique who will never satisfy themselves and pursue the better.they always regret the past and worry about the future. they never think that the life present is just what they hope in the past.
In the end ,I hope everyone cherish what he own now and live in the present.