I am aware that I am very old ...

I am aware that I am very old now; but I am also aware that I have never been so young as I am now, in spirit, since I was fourteen and entertained Jim Wolf with the wasps. I am only able to perceive that I am old by a mental process; I am altogether unable to feel old in spirit. It is a pity, too, for my lapses from gravity must surely often be a reproach to me. When I am in the company of very young people I always feel that I am one of them, and they probably privately resent it.
I am aware that I am very old now; but I am also aware that I have never been so young as I am now, in spirit, since I was fourteen and entertained Jim Wolf with the wasps. I am only able to perceive that I am old by a mental process; I am altogether unable to feel old in spirit. It is a pity, too, for my lapses from gravity must surely often be a reproach to me. When I am in the company of very young people I always feel that I am one of them, and they probably privately resent it.

Quotes from the same author

Whenever you find yourself on the side of the majority, it is time to pause and reflect.
Wrinkles should merely indicate where smiles have been.
Whoever is happy will make others happy, too.
Always tell the truth. That way, you don't have to remember what you said.
A thing long expected takes the form of the unexpected when at last it comes.