I wrote 'Tom Sawyer' and 'Huck Finn' for adults exclusively, and it always distressed me when I find that boys and girls have been allowed access to them. The mind that becomes soiled in youth can never again be washed clean.
Authorship is not a trade, it is an inspiration; authorship does not keep an office, its habitation is all out under the sky, and everywhere the winds are blowing and the sun is shining and the creatures of God are free.
It would not be possible for Noah to do in our day what he was permitted to do in his own ... The inspector would come and examine the Ark, and make all sorts of objections.
I am admonished in many ways that time is pushing me inexorably along. I am approaching the threshold of age; in 1977 I shall be 142. This is no time to be flitting about the earth. I must cease from the activities proper to youth and begin to take on the dignities and gravities and inertia proper to that season of honorable senility which is on its way.
I would not read the proof of one of my books for any fair & reasonable sum whatever, if I could get out of it. The proof-reading on the P & Pauper cost me the last rags of my religion.