The question of "unreality"is a very important one. Misled by grammar, the great majority of those logicians who have dealt with this question have dealt with it on mistaken lines. They have regarded grammatical form as a surer guide in analysis than, in fact, it is. And they have not known what differences in grammatical form are important.

Morally, a philosopher who uses his professional competence for anything except a disinterested search for truth is guilty of a kind of treachery.

Do not feel certain of anything.

Love and knowledge led upwards to the heavens.

I am allowed to use plain English because everybody knows that I could use mathematical logic if I chose.

True happiness for human beings is possible only to those who develop their godlike potentialities to the utmost.

I say quite deliberately that the Christian religion, as organized in its Churches, has been and still is the principal enemy of moral progress in the world.