Experience is the foundation of intelligence.
Travellers know how wide the world is.
It's better to see one time than to hear one hundred times.
Who has experienced much, who knows much.
The more you walk, the wider you will see.
Believing in the eyes is better than believing in the ears.
If there are people you have seen, don't go to people you have heard about.
If you want to understand the reality, you have to close your books and walk around.