Jaundice is the disease that your friends diagnose.

The clean tongue, the clear head, and the bright eye are birthrights of each day.

There is no more difficult art to acquire than the art of observation, and for some men it is quite as difficult to record an observation in brief and plain language.

Half of us are blind, few of us feel, and we are all deaf.

The future belongs to Science. More and more she will control the destinies of the nations. Already she has them in her crucible and on her balances.

Live neither in the past nor in the future, but let each day's work absorb your entire energies, and satisfy your widest ambition.

Soap and water and common sense are the best disinfectants.