Just as distance tests a horse's endurance, time reveals a person's heart; Just as distance determines the strength of a horse, a person has stood the test of time; The strength of a horse is tested by the distance it walks, and a person's heart is seen by the passage of time.

Is the only criterion for testing truth.

A knowledgeable person who doesn't practice is equal to a bee who doesn't make honey. Sadie

It is not enough to have knowledge, but also to use knowledge; Desire alone is not enough, but also action. -Goethe

One can only know one's own ability by applying it in practice. -Little seneca.

Since ancient times, men have suffered a lot and have never been too handsome.

There is an old saying in China: "Nothing ventured, nothing gained." This sentence is true for human practice and epistemology. It is impossible to know without practice. Mao Zedong

Theory is turning into practice, and practice has injected vitality into it, revised it and tested it-Lenin.