What Smith and Marx have in common is that they were both philosophers of great vision and perceptiveness, deep humanity, and a sense of social reality that has been lost in the abstractly formalistic economic theories that have dominated the field since the last third of the nineteenth century.

Kant thinks we can show that there is no contradiction in supposing we are free.

Utilitarians are usually empiricists who think they can solve every problem by accumulating enough empirical facts. They do not realize that thinking as well as experience is necessary to know anything or get anything right.

Philosophy is about getting the facts right, but it is also about thinking rightly about them. Philosophy is more about the latter than the former.

Kant's system of duties constitutes a Doctrine of Virtue because the duties also indicate what kinds of attitudes, dispositions and feelings are morally virtuous or vicious.

Sometimes when a philosopher's views are widely rejected by the world, the fault is not with the philosopher but with the world.

The relation of the law to the self is only a helpful way of thinking about the law, that helps us better understand its validity for us.