I must study politics and war , that my sons may have the liberty to study mathematics and philosophy in order to give their children a right to study painting , poetry ,and music .

• 我必须学习政治和战争；那个我的子孙可能有这自由到学习数学和哲学也为了给与他们的孩子们一好的地方学习画画；诗；和音乐.