"Science, my lad, is made up of mistakes, but they are mistakes which it is useful to make, because t..." — Jules Verne

Put two ships in the open sea, without wind or tide, and, at last, they will come together. Throw two planets into space, and they will fall one on the other. Place two enemies in the midst of a crowd, and they will inevitably meet; it is a fatality, a question of time; that is all.

I believe cats to be spirits come to earth. A cat, I am sure, could walk on a cloud without coming through.