“Philosophy ought to question the basic assumptions of the age. Thinking through, critically and carefully, what most of us take for granted is, I believe, the chief task of philosophy, and the task that makes philosophy a worthwhile activity.”

“If it is in our power to prevent something bad from happening, without thereby sacrificing anything of comparable moral importance, we ought, morally, to do it.”

“If morality is always relative to one’s own society, then you, coming from your society, have your moral standards and I, coming from my society, have mine. It follows that when I criticize your moral standards, I am simply expressing the morality of my society, but it also follows that when you condemn me for criticizing the moral standards of your society, you are simply expressing the morality of your society. There is, on this view, no way of moving outside the morality of one’s own society and expressing a transcultural or objective moral judgment about anything, including respect for the cultures of different peoples. Hence if we happen to live in a culture that honors those who subdue other societies and suppress their cultures, then that is our morality, and the relativist can offer no cogent reason why we should not simply get on with it.”

“In the past 20 years alone, it adds up to more death than were caused by all the civil and international wars adn government repression of the entire twentieth century, the century of Hitler and Stalin. How much would we give to prevent those horrors? Yet how little are we doing to prevent today's even larger toll and all the misery that it involves? I believe that if you read this book to the end, and look honestly and carefully at our situation, assessing both the facts and the ethical arguments, you will agree that we must act.”

“Socrates: So even our walks are dangerous here. But you seem to have avoided the most dangerous thing of all.Bertha: What's that?Socrates: Philosophy. Bertha: Oh, we have philosophers here. Socrates: Where are they?Bertha: In the philosophy department.Socrates: Philosophy is not department. Bertha: Well, we have philosophers.Socrates: Are they dangerous?Bertha: Of course not.Socrates: Then they are not true philosophers.”

“don’t confuse scepticism as an attitude, or a method, with scepticism as a philosophy. Socrates was sceptical in temperament, and his method was to question everything. But he believed in absolute truth; he was no sceptic.”

“The status of philosophy is such that it is not the case that you cannot be wrong in philosophy but that it is very difficult to be right. (p.12)”