The philosophies of one age have become the absurdities of the next, and the foolishness of yesterday has become the wisdom of tomorrow.

• The philosophies of one age have become the absurdities of the next, and the foolishness of yesterday has become the wisdom of tomorrow.
• Observe, record, tabulate, communicate. Use your five senses. Learn to see, learn to hear, learn to feel, learn to smell, and know that by practice alone you can become expert.
• To have striven, to have made the effort, to have been true to certain ideals - this alone is worth the struggle.
• Medicine is a science of uncertainty and an art of probability.
• 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.
• Soap and water and common sense are the best disinfectants.
• No human being is constituted to know the truth, the whole truth, and nothing but the truth and even the best of men must be content with fragments, with partial glimpses, never the full fruition.
• The value of experience is not in seeing much, but in seeing wisely.
• The future is today.
• The good physician treats the disease the great physician treats the patient who has the disease.