If a dog will not come to you after having looked you in the face you should go home and examine your conscience.

What would be the nicest thing I could say about Newt Gingrich? He may be one of the great supporters of the humanities because you have people who don't want to study the social sciences because it's not profitable and now Newt as the highest-paid historian in American history may be an encouragement to people to study history.

To those who have chosen the profession of medicine a knowledge of chemistry and of some branches of natural history and indeed of several other departments of science affords useful assistance.

My father was my main influence. He was a preacher but he was also a history and political science teacher and since he was my hero I wanted to follow in his footsteps and become a teacher.

Humanity has experienced many revolutionary changes over the course of history: revolutions in agriculture in science industrial production as well as numerous political revolutions. But these have all been limited to the external aspects of our individual and collective lives.

I graduated from the University of Delaware with a double major in history and political science.

History is the science of things which are not repeated.

If history and science have taught us anything it is that passion and desire are not the same as truth.

Books are the carriers of civilization. Without books history is silent literature dumb science crippled thought and speculation at a standstill.

One could write a history of science in reverse by assembling the solemn pronouncements of highest authority about what could not be done and could never happen.