What did the former US President write in a letter to his son's teacher?

The letter of the late US President Abraham Lincoln (February 12, 1809 - April 15, 1865) to the principal of the school where his son studied was written nearly 200 years ago, but until now the letter still retains its relevance and gives us much to think about.

US President Abraham Lincoln (February 12, 1809 - April 15, 1865).

Dear Teacher,

My son will have to learn all this, that not all men are just, not all men are honest. But teach him this: For every scoundrel on the street, there is an upright man; for every selfish politician, there is a dedicated leader.

Teach him that for every hater there is a friend. It will take time, I know; but teach him, please, that a dollar earned is far more valuable than five found.

Teach him to learn to lose and to enjoy winning. Teach him to avoid jealousy.

Teach him the secret of quiet joy. Teach him that the bullies are the easiest to beat.

Teach him the wonder of books, but also give him quiet time to ponder the eternal mystery of birds in the sky, bees in the sun, and flowers on a green hillside.

Please teach him that it is better to fail than to cheat in an exam.

Teach him to have faith in his own ideas, even if everyone tells him they are wrong.

Teach him to be gentle with gentle people and tough with tough people. Give him the strength not to follow the crowd when everyone else is getting with the trend.

Teach me to listen to all men, but teach me also to filter out the good that comes through.

Teach him to laugh when he is sad… Teach him there is no shame in tears.

Teach him to scoff at cynics and to beware of too much sweetness.

Teach him to sell his brawn and brain to the highest bidder but never to put a price tag on his heart and soul.

Teach him to close his ears to a howling mob… and to stand up for what he thinks is right.

Treat him gently but do not cuddle him, because only the test of fire makes a hard man.

Please help him to have the courage to be intolerant of wrong, and the perseverance to be brave.

Teach him to always have sublime faith in himself because then he will always have sublime faith in mankind.

This is a big ask, I know, sir. But please do your best, if you can, my son will be a happy and lucky boy!

According to LDO