From "practice makes true knowledge", I thought of the poem (,); Think of famous aphorisms (); Think of the proverb ().

I know that practice makes true knowledge, from which I can think that a poem is like a fish in the water, and a bird sounds in the mountains.

I think that a famous aphorism can only be learned from paper, but I never know it.

think of the proverb, wisdom comes from labor, and true knowledge comes from practice.