We have a limit, a very discouraging, humiliating limit: death.
Naturally, there's got to be a limit for I don't expect to live forever, but I do intend to hang on as long as possible.
I believe, sir, in all the progress. Air navigation is the result of the oceanic navigation: from water the human has to pass in the air. Everywhere where creation will be breathable to him, the human will penetrate into the creation. Our only limit is life.
Yet though a man gets many wounds in breast, He dieth not, unless the appointed time, The limit of his life's span, coincide; Nor does the man who by the hearth at home Sits still, escape the doom that Fate decrees.
You can only live to be so old, then you gotta let go.
It is indeed the boundary of life, beyond which we are not to pass; which the law of nature has pitched for a limit not to be exceeded.
As Oscar tells to Chalky, eventually we all run out of road...
The sands are number'd that make up my life; Here must I stay, and here my life must end.
I don't want to live beyond the age of 75. That would be a good point to bow out. I don't want to go on for ever.