The given quotation is considered to be about efforts that must be done to achieve the set goals. I understand the author’s point of view like this: the educational process can be really tough, but it’s worth it, because after endeavoring, you will acquire new useful skills.
Overall, you will reap the benefits of learning.
According to my personal opinion this statement is completely correct. There is nothing in this world you can get without spending your time. Every skill, every knowledge we have acquired during our life is an indication of our work.
There are lots of examples in history and literature that confirm this quotation. For instance, a novella written by Gorkiy “Childhood” in which a mail character learnt how to write from his grandfather and after years that he spent on studying, he finally reaped the benefits of learning, but unfortunately only after his death. Another example is russian emperor Peter the Great. According to some historical sources Peter studied military affairs from a very young age. Exactly this circumstance played a great role in his future achievements.
In conclusion, the quotation is eligible for existence and is close to reality. Anyway, all people around the world can give examples of situations that refer to this statement.