a bird in the hand is worth two in the bush

If one learns without thinking, one will be lost in his learning. That is, if one does not think about what one learns, he will not arrive at the truth of it.

Washington, D.C. (a city, the capital city of the United States)

problem / question / inquiry

(of edge) dull, blunt / (of senses) dull, stupid, slow, slow-witted

association

fall in love with / admire / grow senile

light / lamp / torch

bright / light