The absence of evidence is not the evidence of absence.

Books permit us to voyage through time, to tap the wisdom of our ancestors.

Somewhere, something incredible is waiting to be known.

Human history can be viewed as a slowly dawning awareness that we are members of a larger group Groups of people from divergent ethnic and cultural backgrounds working in some sense together [is] surely a humanizing and character building experience. If we are to survive, our loyalties must be broadened further, to include the whole human community, the entire planet Earth.

All inquires carry with them some element of risk. There is no guarantee that the universe will conform to our predispositions.

[Kepler] preferred the hard truth to his dearest illusions, and that is the heart of science.

In Italy, the Inquisition was condemning people to death until the end of the eighteenth century, and inquisitional torture was not abolished in the Catholic Church until 1816. The last bastion of support for the reality of witchcraft and the necessity of punishment has been the Christian churches.