No moral system can rest solely on authority.

No morality can be founded on authority, even if the authority were divine.

But if science may be said to be blind without philosophy, it is true also that philosophy is virtually empty without science.

We say that a sentence is factually significant to any given person, if, and only if, he knows how to verify the proposition which it purports to express.

Even logical positivists are capable of love.

Why should you mind being wrong if someone can show you that you are?

I saw a Divine Being. I'm afraid I'm going to have to revise all my various books and opinions.

The ground for taking ignorance to be restrictive of freedom is that it causes people to make choices which they would not have made if they had seen what the realization of their choices involved.

It seems that I have spent my entire life trying to make life more rational and that it was all wasted effort.

It appears, then, that ethics, as a branch of knowledge, is nothing more than a department of psychologyand sociology.

While moral rules may be propounded by authority the fact that these were so propounded would not validate them.

Never fret for an only son, the idea of failure will never occur to him.

There are no bad people, only badly loved people.

He'd learned his lesson a long time ago: Even in the midst of heartbreak, you could still find yourself laughing.

Don't criticize that man unless you have walked in his shoes.

The denigration of those we love always detaches us from them in some degree. Never touch your idols: the gilding will stick to your fingers.

Usability rules the web. Simply stated, if the customer can't find a product, then he or she will not buy it.

He who acts, spoils; he who grasps, lets slip.

I love playing different characters all the time, so I'm concentrating on doing other stuff.

That so many people respond to me is fabulous. It is like having a kind of Alzheimer's disease, where everyone knows you and you don't know anyone.

Why, what should be the fear? I do not set my life at a pin's fee.