Cheerfulness in most cheerful people is the rich and satisfying result of strenuous discipline.

Cheerfulness in most cheerful people is the rich and satisfying result of strenuous discipline.

大多数快乐的人的快乐是艰苦训练的丰富和令人满意的结果。

-- Edwin Percy Whipple 埃德温·珀西·惠普尔