Morality is neither rational nor absolute nor natural. World has known many moral systems, each of which advances claims universality; all moral systems are therefore particular, serving a specific purpose for their propagators or creators, and enforcing a certain regime that disciplines human beings for social life by narrowing our perspectives and limiting our horizons.

Philosophical systems are wholly true for their founders only.

We often refuse to accept an idea merely because the tone of voice in which it has been expressed is unsympathetic to us.

Convictions are prisons.

I'm not upset that you lied to me, I'm upset that from now on I can't believe you.

We are in the greatest danger of being run over when we have just gotten out of the way of a carriage.

What I understand by "philosopher": a terrible explosive in the presence of which everything is in danger.