All work and no play makes Jack a dull boy - and Jill a wealthy widow.
It takes hundreds of nuts to hold a car together, but it takes only one of them to scatter it all over the highway.
Zoo: An excellent place to study the habits of human beings.
Experience is a great teacher, and sometimes a pretty teacher is a great experience.
Adolescence begins when children stop asking questions-because they know all the answers.
[Statistics] The science that can prove everything except the usefulness of statistics.