关于"永不言弃"的英语谚语，综合权威资料整理如下：

一、经典名言类

1. Never give up! / Never give up! / Perseverance prevails!（永不要放弃!/锲而不舍，金石可镂!/ 坚持就是胜利!）

2. I can accept failure, but I can't accept giving up.（我可以接受失败，但我不能接受放弃。）

3. The only way to do great work is to love what you do. / Patience and perseverance are painful, but they will benefit you one by one.（做伟大工作的唯一方法是热爱你所做的。/ 耐心和坚持是痛苦的，但会逐个带来好处。）

二、哲理启示类

1. The mountain is not the limit, but the starting point.（山不是终点，而是起点。）

2. The only limit to our realization of tomorrow will be our doubts of today.（实现明天的唯一限制是今天的疑虑。）

3. The best time to plant a tree was 20 years ago. The second best time is now.（种树的最佳时间是20年前，其次是现在。）

三、行动激励类

1. Keep your face always toward the sunshine—and shadows will fall behind you.（始终面向阳光，阴影将落在你身后。）

2. Success is not final, failure is not fatal: It is the courage to continue that counts.（成功不是终点，失败也不是致命的：继续前进的勇气才是关键。）

3. The future belongs to those who believe in the beauty of their dreams.（未来属于相信梦想之美的人。）

这些谚语通过不同视角诠释坚持与毅力的价值，既包含行动指导，也蕴含深刻哲理，适用于激励个人成长与克服困难。