David, where do you get your ideas?

The same place you get yours. Talking to people, participating in life, asking questions (the big questions), reading, theatre…There is very little new under the sun but it is how you combine and interpret what you see and hear that counts. Shakespeare combined daggers and eyes in a unique way when he said "he had daggers in his eyes". We all get the imagery, it is the work of pure inspiration. Daggers and eyes had been around for quite awhile before the genius of Shakespeare combined them to describe murderous revengeful thoughts. I think though that this phrase was born out of observation. So, don't force the ideas, just let them come about by living.