Bertrand Russell Quotes about Struggle

Bertrand Russell (2015). “Mysticism and Logic and Other Essays: Top Philosophy Collections”, p.36, 谷月社
Bertrand Russell (2015). “In Praise of Idleness”, p.1, Lulu Press, Inc
Bertrand Russell (2015). “In Praise of Idleness”, p.1, Lulu Press, Inc
Bertrand Russell (2013). “The Conquest of Happiness”, p.14, W. W. Norton & Company