Mammals are sentient beings that want to live and are afraid to die. Evolution vouchsafed us all with an instinct to survive, reproduce and flourish.

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.

We think of our eyes as video cameras and our brains as blank tapes to be filled with sensory inputs.

I’m a skeptic not because I do not want to believe, but because I want to know.

The recent medical controversy over whether vaccinations cause autism reveals a habit of human cognition — thinking anecdotally comes naturally, whereas thinking scientifically does not.

People believe in God because we are pattern-seeking, storytelling, mythmaking, religious, moral animals.

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.