In this world nothing can be said to be certain, except death and taxes.
For my part I know nothing with any certainty, but the sight of the stars makes me dream.
The only certainties in life are death and taxes.
The only certainty life contains is death.
Benjamin Franklin said there were only two things certain in life: death and taxes. But I'd like to add a third certainty: trash. And while some in this room might want to discuss reducing taxes, I want to talk about reducing trash.
Why had we come to the moon? The thing presented itself to me as a perplexing problem. What is this spirit in man that urges him for ever to depart from happiness and security, to toil, to place himself in danger, to risk an even a reasonable certainty of death? It dawned upon me that there in the moon as a thing I ought always to have known, that man is not made to go about safe and comfortable and well fed and amused. ... against his interest, against his happiness, he is constantly being driven to do unreasonable things. Some force not himself impels him, and he must go.
How sweet is the assurance, how comforting is the peace that come from the knowledge that if we marry right and live right, our relationship will continue, notwithstanding the certainty of death and the passage of time. Men may write love songs and sing them. They may yearn and hope and dream. But all of this will be only a romantic longing unless there is an exercise of authority that transcends the powers of time and death.
One third, more or less, of all the sorrow that the person I think I am must endure is unavoidable. It is the sorrow inherent in the human condition, the price we must pay for being sentient and self-conscious organisms, aspirants to liberation, but subject to the laws of nature and under orders to keep on marching, through irreversible time, through a world wholly indifferent to our well-being, toward decrepitude and the certainty of death. The remaining two thirds of all sorrow is homemade and, so far as the universe is concerned, unnecessary.
It is part of our nature to survive. Faith is an instinctive response to aspects of existence that we cannot explain by any other means - be it the moral void we perceive in the universe, the certainty of death, the mystery of the origin of things, the meaning of our own lives or the absence of meaning.
The certainty of death and the uncertainty of the hour of death is a source of grief throughout our life.
While denial leads to certainty, it is only the certainty of death. This is true for individuals and also for civilizations.
We all know that the theater and every play that comes to Broadway have within themselves, like the human being, the seed of self-destruction and the certainty of death. The thing is to see how long the theater, the play, and the human being can last in spite of themselves.
or simply: