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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...more

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To teach how to live without certainty and yet without being paralysed by hesitation is perhaps the chief thing that philosophy, in our age, can do fo...more

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Remember your humanity, and forget the rest.

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When two men of science disagree, they do not invoke the secular arm; they wait for further evidence to decide the issue, because, as men of science, ...more

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Dogmatism and skepticism are both, in a sense, absolute philosophies; one is certain of knowing, the other of not knowing. What philosophy should diss...more

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As a philosopher, if I were speaking to a purely philosophic audience I should say that I ought to describe myself as an Agnostic, because I do not th...more

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Never let yourself be diverted, either by what you wish to believe, or what you think could have beneficent social effects if it were believed; but lo...more

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Science is what you know philosophy is what you don't know.

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Science is what you know, philosophy is what you don't know.

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I would never die for my beliefs because I might be wrong.

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Do not fear to be eccentric in opinion, for every opinion now accepted was once eccentric.

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But without going to such extremes prudence may easily involve the loss of some of the best things in life. The worshipper of Dionysus reacts against ...more

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When a man tells you he knows the exact truth about anything, you are safe in inferring he is an inexact man.

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It is evident as a matter of logic that, since they (world religions) disagree, not more than one of them can be true.

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Those who fear life are already three parts dead.