(1) This famous saying not only illustrates a life phenomenon, but also contains a profound truth. Please tell this truth.

(2) Please cite a fact that is consistent with this famous saying.

(1) A person must have rich knowledge in self-reliance. Or: if a person has no knowledge, he will be like an empty pocket without anything, and he can't stand on his own feet.

(2) "omitted", as long as it meets the requirements.