In a world in transition, students and teachers both need to teach themselves one essential skill - learning how to learn. - Carl Sagan

We can pray over the cholera victim, or we can give her 500 milligrams of tetracycline every 12 hours. (There is still a religion, Christian Science, that denies the germ theory of disease; if prayer fails, the faithful would rather see their children die than give them antibiotics.) We can try nearly futile psychoanalytic talk therapy on the schizophrenic patient, or we can give him 300 to 500 milligrams a day of clozapine. The scientific treatments are hundreds or thousands of times more effective than the alternatives. (And even when the alternatives seem to work, we don’t actually know that they played any role: Spontaneous remissions, even of cholera and schizophrenia, can occur without prayer and without psychoanalysis.) Abandoning science means abandoning much more than air conditioning, CD players, hair dryers, and fast cars.

I have only one regret,” he had said in his gravelly voice. “My daughter married a Bulgarian.

For all our failings, despite our limitations and fallibilities, we humans are capable of greatness.