My problem is that I think everybody needs to work as hard as I worked when I was in my prime.

It is not the young man who should be considered fortunate but the old man who has lived well, because the young man in his prime wanders much by chance, vacillating in his beliefs, while the old man has docked in the harbor, having safeguarded his true happiness.

I’m 81 and I’m in the prime of my life.

317 is a prime, not because we think so, or because our minds are shaped in one way rather than another, but because it is, because mathematical reality is built that way.