The whole of theology, in regard to hell no less than to heaven, takes it for granted that Man is what is of most importance in the Universe of created beings. Since all theologians are men, this postulate has met with little opposition.

Dogmatism is the greatest of mental obstacles to human happiness.

It is undesirable to believe a proposition when there is no ground whatever for supposing it true

I want to say, in all seriousness, that a great deal of harm is being done in the modern world by belief in the virtuousness of WORK, and that the road to happiness and prosperity lies in the organised diminution of work.

The human race may well become extinct before the end of the century.

On the one hand, philosophy is to keep us thinking about things that we may come to know, and on the other hand to keep us modestly aware of how much that seems like knowledge isn't knowledge

Indignation is a submission of our thoughts, but not of our desires.