Bertrand RussellQuotes（バートランド・ラッセルの名言・警句)

　

'Reason' has a perfectly clear and precise meaning. It signifies the choice of the right means to an end that you wish to achieve. It has nothing whatever to do with the choice of ends. But opponents of reason do not realize this, and think that advocates of rationality want reason to dictate ends as well as means.
　Source：Human Society in Ethics and Politics, 1954, preface．
　More info.:http://russell-j.com/cool/47T-PREF-01.HTM