This sentence is undoubtedly wrong, or unscientific.
(1) If you change this sentence to "it's never too old to learn" or a little more vulgar "as long as you don't learn to die, you will learn to die", it may also make people feel very sympathetic. But "learning from death" and "learning from death" are two completely different realms. The so-called "never too old to learn" represents a concept of time, that is, remember to study all your life and give yourself a qualitative new promotion. This kind of learning is interesting, or related to the improvement of personal quality; Learning from death is different. It often corresponds to a kind of exam-oriented education, especially when we are faced with bugs such as senior high school entrance examination and college entrance examination, that is, in a special period, regardless of people's physiological characteristics, we blindly learn from death in order to extend the time to increase the so-called exam scores. This kind of learning state is not very good, or it is a kind of morbid state, which can not reach the realm of "learning from the dead" because "learning from the dead" can only maintain one.
(2) So this involves some questions about learning interest, or exam-oriented education and quality education, or the degree and efficiency of individual learning efforts, and so on. It depends on whether these points can be related to your textbook knowledge. I think so many divergent ideas should always be in line with the contents of the book. Hehe, in fact, the unscientific point of "learning to die" is really expounded, as long as you compare it with the difference of "learning to die", as mentioned in the first point above.
It's definitely not a standard answer, but I hope it can inspire you ~