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. (Carl Sagan)

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.

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Now God comes to thee, not as in the dawning of the day, not as in the bud of the spring, but as the sun at noon to illustrate all shadows, as the sheaves in harvest, to fill all penuries, all occasions invite his mercies, and all times are his seasons.

John Donne

And what constitutes evil, real evil, is the taking of a single human life. Whether a man would die tomorrow or the day after or eventually... it doesn't matter. Because if God does not exist, then life... every second of it... Is all we have.

Anne Rice

One must, I think, be struck more and more the longer one lives, to find how much in our present society a man's life of each day depends for its solidity and value upon whether he reads during that day, and far more still on what he reads during it.

Matthew Arnold

Observers in earlier epochs might have found it equally preposterous to suppose that the world economy would one day be doubling several times within a single lifespan. Yet that is the extraordinary condition we now take to be ordinary.

Nick Bostrom

Somebody should tell us, right at the start of our lives, that we are dying. Then we might live life to the limit, every minute of every day. Do it! I say. Whatever you want to do, do it now! There are only so many tomorrows.

Pope Paul VI