Since humans are by nature tribal, the overall goal is to expand the concept of the tribe to include ALL members of the species, in a global free society.

People who espouse Intelligent Design believe nature is so complex as to require an intelligent designer-God. Similarly, liberals believe the economy is so complex as to require an intelligent designer-government.

Science is a set of methods designed to describe and interpret observed or inferred phenomenon, past or present, and aimed at building a testable body of knowledge open to rejection or confirmation.

Through no divine design or cosmic plan, we have inherited the mantle of life's caretaker on the earth, the only home we have ever known.

Believing that the rustle in the grass is a dangerous predator when it is only the wind does not cost much, but believing that a dangerous predator is the wind may cost an animal its life.

Science is not the affirmation of a set of beliefs but a process of inquiry aimed at building a testable body of knowledge constantly open to rejection or confirmation. In science, knowledge is fluid and certainty fleeting. That is at the heart of its limitations. It is also its greatest strength.

The actual atoms and molecules that make up my brain and body today are not the same ones that I was born with on September 8, 1954, a half-century ago this month.