I always do the first line well, but I have trouble doing the others

Writing is like prostitution. First you do it for love, and then for a few close friends, and then for money.

the only trouble I should get in for my writing is the trouble I make myself.

The trouble with young writers is that they are all in their sixties

Writing is no trouble: you just jot down ideas as they occur to you. The jotting is simplicity itself -- it is the occurring which is difficult.

One ought to look a good deal at oneself before thinking of condemning others.