I was less successful in my attempts to effect preventive vaccination against typhus by using the virus and in trying to produce large quantities of serum using large animals

A competitive culture endures by tearing people down.

Up to a certain point anxiety is good, for it promotes action. Beyond that point we freeze any fixed attitudes or rush about without thinking deeply from one decision to another.

To think deeply in our culture is to grow angry and to anger others; and if you cannot tolerate this anger, you are wasting the time you spend thinking deeply. One of the rewards of deep thought is the hot glow of anger at discovering a wrong, but if anger is taboo, thought will starve to death.

Human beings have the capacity to learn to want almost any conceivable material object. Given, then, the emergence of a modern industrial culture capable of producing almost anything, the time is ripe for opening the storehouse of infinite need!... It is the modern Pandora's box, and its plagues are loose upon the world.

The paradox of the human condition is expressed more in education than elsewhere in human culture, because learning to learn has been and continues to be Homo Sapiens' most formidable evolutionary task... It must also be clear that we will never quite learn how to learn, for since Homo Sapiens is self-changing, and since the more culture changes the faster it changes, man's methods and rate of learning will never quite keep pace with his need to learn.

Of all the problems which were open to me for study, typhus was the most urgent and the most unexplored. We knew nothing of the way in which contagion spread