Sharing some of the things I have in my sketchbooks:

Ray Bradbury, poet of the space-age.
Ray Bradbury, poet of the space-age.

 

Jupiter rising over Europa's mysterious ice covered surface.
Jupiter rising over Europa’s mysterious ice covered surface.
I am fascinated by Roman art and architecture. This is a fantasy view of some Roman metropolis.
I am fascinated by Roman art and architecture. This is a fantasy view of some Roman metropolis.
A spaceskiff orbiting a new world.
A spaceskiff orbiting a new world.
Mark Twain. Probably the funniest and most observant man to ever live.
Mark Twain. Probably the funniest and most observant man to ever live.
Oscar Wilde. Probably the second funniest and most observant man to ever live.
Oscar Wilde. Probably the second funniest and most observant man to ever live.

 

Sir Arthur C. Clarke, prophet and poet.
Sir Arthur C. Clarke, prophet and poet.
Isaac Asimov, one of the most prodigious writers of all time.