Even if animal experimentation was proved to be of value, it would be morally wrong.

I like a bit of mongrel myself, whether it's a man or a dog.

The fact is that the intrinsic worth of the book, play or whatever the author is trying to sell is the least, last factor in the the whole transaction.

Self-denial is not a virtue; it is only the effect of prudence on rascality.

Forgive him, for he believes that the customs of his tribe are the laws of nature!

I am afraid we must make the world honest before we can honestly say to our children that honesty is the best policy.

The more reasonable a student was in mathematics, the more unreasonable she was in the affairs of real life, concerning which fewtrustworthy postulates have yet been ascertained.