To Remain Healthy A Man Must Have

Even After The Greatest Defeats, The Depressing Thought Of Being A Failure Is Best Combated By Taking Stock Of All Your Past Achievements.

Almost No Germ Is Unconditionally Dangerous To Man; Its Disease-producing Ability Depends Upon The Body's Resistance.

I Doubt That Fleming Could Have Obtained A Grant For The Discovery Of Penicillin On That Basis [a Requirement For Highly Detailed Research Plans] Because He Could Not Have Said, 'i Propose To Have An Accident In A Culture So That It Will Be Spoiled By A Mould Falling On It, And I Propose To Recognize The Possibility Of Extracting An Antibiotic From This Mould.'

What Makes Me So Certain That The Natural Human Lifespan Is Far In Excess Of The Actual One Is This. Among All My Autopsies (and I Have Performed Over 1000), I Have Never Seen A Person Who Died Of Old Age. In Fact, I Do Not Think That Anyone Has Ever Died Of Old Age Yet. We Invariably Die Because One Vital Part Has Worn Out Too Early In Proportion To The Rest Of The Body.

Nothing Erases Unpleasant Thoughts More Effectively Than Conscious Concentration On Pleasant Ones.