Picasso's doves! I've totally seen them before, you're right, just not making the connection between the name and the thing. I think my favorite is the third, that explosion of color. Hope in that way.

Explosion of color! The first one is on the tile I got in Barcelona, and I like the progression of first flying up, then bringing the branch down, and then EXPLOSION OF COLOR!

Man I didn't even see it as a progression. I like the progression: upward towards the stars/infinity/God, down to earth, the subsequent interaction and blossoming of life.