Some of the best quotes on the value of learning:

Learning is like rowing upstream; not to advance is to drop back.
Saying (Chinese)

I am always ready to learn, although I do not always like being taught.
Winston Churchill

You learn more from getting your butt kicked than from getting it kissed.
Tom Hanks

To learn is no easy matter and to apply what one has learned is even harder.
Mao Tse-Tung

The ink of the scholar is more sacred than the blood of the martyr.

Why should society feel responsible only for the education of children, and not for the education of all adults of every age?
Erich Fromm