It is undesirable to believe a proposition when there is no ground whatever for supposing it true
Bertrand RussellThe whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts.
Bertrand RussellThe three main extra-rational activities in modern life are religion, war, and love. all these are extra-rational, but love is not anti-rational, that is to say, a reasonable man may reasonably rejoice in its existence
Bertrand Russell