A bacteriologist is a man whose conversation always start with the germ of an idea.
A creature that never cries over spilt milk: a cat.
[A mathematician is a] scientist who can figure out anything except such simple things as squaring the circle and trisecting an angle.
Children grow out of childhood, but parents never grow out of parenthood.
Divorce is the price people play for playing with matches.
You are not fully dressed until you wear a smile.