"I can calculate the motions of the heavenly bodies, but not the madness of people."

I had used eclectic therapy and behavior therapy on myself at the age of 19 to get over my fear of public speaking and of approaching young women in public.

Why do people talk of the horrors of old age? It's great. I feel like a fine old car with the parts gradually wearing out, but I'm not complaining,... Those who find growing old terrible are people who haven't done what they wanted with their lives.

Just as we reject racism, sexism, ageism, and heterosexism, we reject speciesism. The species of a sentient being is no more reason to deny the protection of this basic right than race, sex, age, or sexual orientation is a reason to deny membership in the human moral community to other humans.