People into hard sciences, neurophysiology, often ignore a core philosophical question: 'What is the relationship between our unique, inner experience of conscious awareness and material substance?' The answer is: We don't know, and some people are so terrified to say, 'I don't know.'

I was reading Plato's 'The Republic' at age 18, and I can't account fully the electricity that had for me.

I felt the question of the afterlife was the black hole of the personal universe: something for which substantial proof of existence had been offered but which had not yet been explored in the proper way by scientists and philosophers.

If you present your dog to a veterinarian with the instruction to put him to sleep, you would normally mean something very different than you would upon taking your wife or husband to an anesthesiologist with the same words.

I consider any gun that can chamber a round and send a projectile down its barrel at a high rate of speed into my body - causing me injury or death - to be an assault weapon.

Prepare for death, if here at night you roam, and sign your will before you sup from home.

The question of one versus two species of African elephants isn't about settling an arcane DNA argument; it's about life or death for these majestic, extraordinary creatures.

I'll always remember when I bumped into Good Morning America's Robin Roberts on a flight to my mother's funeral in 1994, and how kind she was during that difficult time.