以下是關於努力的英文格言：
1. Hard work never defeats ambition.
2. A man who never tries is the man who never wins.
3. Constant effort is the sovereign of success.
4. No pain, no gain.
5. One never loses anything by following the simplest method of all, namely, the right one.
6. One's real value first recognized by oneself.
這些格言都強調了努力和持續付出的重要性，認為只有通過不懈的努力，才能實現目標。