Just don't write them on yellow stickies on you monitor!

Here it is from the source. Now we can all go and update our corporate security policies to reflect this advice. Or, as Schneier has advised as an alternative, get the open source Password Safe.

"This is good advice, and I've been saying it for years. Simply, people can no longer remember passwords good enough to reliably defend against dictionary attacks, and are much more secure if they choose a password too complicated to remember and then write it down. We're all good at securing small pieces of paper. I recommend that people write their passwords down on a small piece of paper, and keep it with their other valuable small pieces of paper: in their wallet."