Conventional people are roused to fury by departure from convention, largely because they regard such departure as a criticism of themselves.

Bertrand Russell

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

Bertrand Russell

Dogmatism and skepticism are both, in a sense, absolute philosophies; one is certain of knowing, the other of not knowing. What philosophy should dissipate is certainty, whether of knowledge or ignorance.

Bertrand Russell

The fact that an opinion has been widely held is no evidence whatever that it is not utterly absurd.

“The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts.”