以下是關於知足的英文佳句：
1. It's better to be content with what you have than to be always looking for what's missing.
知足者常樂。
2. Content is the ultimate wealth.
知足是最大的財富。
3. It's better to be happy than right.
知足常樂。
4. The best things in life are free: they are happiness, and the memory of happy moments. The second best are things that cost money: cars, houses, clothes, and shoes. The worst are things that cost other people.
生活中最好的東西都是免費的，那就是幸福和快樂的時刻，其次是那些花費金錢的東西，如汽車、房子、衣服和鞋子，最差的是那些消耗別人精力的東西。
5. A contented mind is a perpetual holiday.
知足常樂。
6. If you want to be happy, set a goal that is beyond your current reach, then work to achieve it.
如果你想要快樂，就設定一個你當前無法達到的目標，然後努力去實現它。
希望以上信息對您有幫助。