悠闲自得,是出于专心勤奋;淡泊安适,是出于恭敬畏惧;无思无虑,是出于善于思考;胆大无畏,是出于小心翼翼。
幸福和不幸取决于我们对事物的看法。
Quality is never an accident; it is always the result of intelligent effort.