“He who reads much and travels much, sees much and knows much.”Miguel de Cervantes · Don Quijote · 1615 · Partea a II-a, capitolul 12
Books give depth, travel gives contact; only together do they make someone who knows.
The sentence links two complementary sources of knowledge: books give depth and the recorded experience of others, while travel gives direct contact with the world. Cervantes, a soldier and a prisoner, knew that neither suffices alone. Someone who only reads risks living on paper; someone who only travels risks not understanding what he sees. Knowledge comes from combining them, not from choosing one.
Why it matters A simple argument for keeping both habits: steady reading and regularly leaving your familiar surroundings.