Which is the best way to gain wisdom and knowledge: travel a lot or read a lot?
The best way to gain knowledge is to not be stuck in "either"s and "or"s. There is absolutely nothing in the world that cannot give you knowledge; reading and travelling are just two ways. Travel AND read as much as you can, AND be open to other ways of gaining knowledge as well.
Wisdom comes from experience, and from knowing the limits of knowledge. The best way to gain wisdom is to absorb what each experience brings, and to be wise is to know what to absorb exactly. They say wisdom is inborn, but I cling to the hope that it can achieved by diversity in experience, clarity in thought, and firmness in one's values.