Wherever your life ends, it is all there. The utility of living consists not in the length of days, but in the use of time; a man may have lived long, and yet lived but a little. Make use of time while it is present with you. It depends upon your will, and not upon the number of days, to have a sufficient length of life.

The usefulness of living lies not in duration but in what you make of it. Some have lived long and lived little. See to it while you are still here. Whether you have lived enough depends not on a count of years but on your will.

The value of life lies not in the length of days, but in the use we make to them; a man may live long, yet get little from life. Whether you find satisfaction in life depends not on your tale of years, but on your will - Montaigne, Essays

Lastly, If length of Days be thy Portion, make it not thy Expectation: rekon not upon long Life, but live always beyond thy Account. He that so often surviveth his Expectations, lives many lives, and will hardly complain of the shortness of his Days. Time past is gone like a shadow; make Times to come, present; conceive that near which may be far off; approximate thy last times by present Apprehensions of them: live like a Neighbour unto Death, and think that there is but little to come. And since there is something in us that must live on, joyn both lives together; unite them in thy Thoughts and Actions, and live in one but for the other. He who thus ordereth the Purposes of this Life, will never be far from the next; and is in some manner already in it, by an happy Conformity, and close Apprehension of it.

Not how long you live, but how much you have lived, how much meaning your life has absorbed and passed on, is what matters.

Is a long life such a good thing if it is lived in daily dread of death or in constant search for satisfaction in a tomorrow which never comes?

One lifetime is not enough to live

And how could we endure to live and let time pass if we were always crying for one day or one year to come back — if we did not know that every day in a life fills the whole life with expectation and memory and that these are that day?

~The value of life lies not in the length of days, but in the use we make of them ~

Is life worth living? Like everybody else, I have many times asked that question, usually deciding negatively, because I am most likely to ask myself whether life is worth living, at times when I am convinced it isn't. One day, in one of my frequent, and probably incurable, scientific moments, it occurred to me to find out. For a month, at the end of each day, I set down a plus sign, or a minus sign, indicating that, in my opinion, life had, or had not, been worth living, that day. At the end of the month, I totted up, and I can't say that I was altogether pleased to learn that the pluses had won the game. It is not dignified to be optimistic.

The lifetime of a human being is measured by decades, the lifetime of the Sun is a hundred million times longer. Compared to a star, we are like mayflies, fleeting ephemeral creatures who live out their lives in the course of a single day.

The significance of life is living.

Consider the fact that we care deeply about what happens to the world after we die. If self-interests were the primary source of meaning in life, then it wouldn’t matter to people if an hour after their death everyone they know were to be wiped from the face of the earth. Yet, it matters greatly to most people. We feel that such an occurrence would make our lives meaningless. The only way death is not meaningless is to see yourself as part of something greater; a family, a community, a society. If you don’t, mortality is only a horror, but if you do, it is not. Loyalty, said Royce, solves the paradox of our ordinary existence, by showing us outside of ourselves the cause which is to be served, and inside of ourselves, the will which delights to do this service, and is not thwarted, but enriched and expressed in such service… Above the level of self-actualization in Maslow’s hierarchy of needs, they suggest the existence in people of a transcendent desire to see and help other beings achieve their potential.
As our time winds down, we all seek comfort in simple pleasures; companionship, everyday routines, the taste of good food, the warmth of sunlight on our faces. We become less interested in the awards of achieving and accumulating and more interested in the rewards of simply being. Yet, while we may feel less ambitious, we also have become concerned for our legacy, and we have a deep need to identify purposes outside ourselves that make living feel meaningful and worthwhile.

In the end, people don’t view their life as merely the average of all of its moments, which after all is mostly nothing much, plus some sleep. For human beings, life is meaningful because it is a story. A story has a sense of a whole, and its arc is determined by the significant moments; the ones where something happens. Measurements of people’s minute by minute levels of pleasure and pain miss this fundamental aspect of human existence. A seemingly happy life may be empty. A seemingly diffic

In the end, people don't view their life as merely the average of all its moments — which, after all, is mostly nothing much plus some sleep. For human beings, life is meaningful because it is a story. A story has a sense of a whole, and its arc is determined by the significant moments, the ones where something happens. Measurements of people's minute-by-minute levels of pleasure and pain miss this fundamental aspect of human existence. A seemingly happy life maybe empty. A seemingly difficult life may be devoted to a great cause. We have purposes larger than ourselves.