No moral system can rest solely on authority.

There is philosophy, which is about conceptual analysis - about the meaning of what we say - and there is all of this ... all of life.

I suddenly stopped and looked out at the sea and thought, my God, how beautiful this is ... for 26 years I had never really looked at it before.

If one takes full account of the persecution of heretics, the frequency and savagery of the religious wars which Christianity had endangered, the harm caused, especially to children, by the pernicious doctrine of original sin, a case could be made for saying that the world would have been better off without Christianity.

It is possible to be a meta-physician without believing in a transcendent reality; for we shall see that many metaphysical utterances are due to the commission of logical errors, rather than to a conscious desire on the part of their authors to go beyond the limits of experience.

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

Even logical positivists are capable of love.