Liberalism is an attitude rather than a set of dogmas – an attitude that insists upon questioning all plausible and self-evident propositions, seeking not to reject them but to find out what evidence there is to support them rather than their possible alternatives.

Wisdom is not to be obtained from textbooks, but must be coined out of human experience in the flame of life.

The business of the philosopher is well done if he succeeds in raising genuine doubt.

Small groups or communities may be far more oppressive to the individual than larger ones. Men are in many ways freer in large cities than in small villages.

Inertia is the first law of history, as it is of physics.

By no amount of reasoning can we altogether eliminate all contingency from our world. Moreover, pure speculation alone will not enable us to get a determinate picture of the existing world. We must eliminate some of the conflicting possibilities, and this can be brought about only by experiment and observation.

All logic texts are divided into two parts. In the first part, on deductible logic, the fallacies are explained; in the second part, on inductive logic, they are committed.

It has generally been assumed that of two opposing systems of philosophy, e.g., realism and idealism, one only can be true and one must be false; and so philosophers have been hopelessly divided on the question, which is the true one.

A creative element is surely present in all great systems, and it does not seem possible that all sympathy or fundamental attitudes of will can be entirely eliminated from any human philosophy.

This open eye for possible alternatives which need to be scrutinized before we can determine which is the best grounded is profoundly disconcerting to all conservatives and to almost all revolutionaries.