-Philipps

Failure is the final test of perseverance.

-Bismarck

There is no such thing as failure for indomitable people.

-Bismarck

A failure only proves that our determination to succeed is strong enough.

-Beauvais

Failure is what I need, and it is as valuable to me as success.

-Edison

What we care about is not whether you have failed, but whether you have no complaints about failure.

-Lincoln

A temporary defeat is much better than a temporary victory.

—— Abu Faraz

Frustration

● After some setbacks, you will gain some insight

● The more you hit a nail, the more thoughtful you will be

● The newborn calf will fall 18 times

● Learn to walk from a fall (Kazakh)

● Don't bump, the bones are not hard

● The child is a child. The twists and turns in the middle are not enough (Germany)

Example:

Zu Chongzhi in the Southern Dynasties, under the extremely simple conditions at that time, made a lot of complicated calculations by relying on small pieces of bamboo, and after repeated failures, finally became the first in the world to accurately calculate pi to the seventh place after the decimal point.

Edison, a great inventor, made countless failed experiments in the process of inventing the electric lamp. He tried more than 6, kinds of fiber materials, and finally decided to use tungsten wire as the filament, which improved the service life of the electric lamp.