What is the meaning of this line?

1. Hearing kind words can make the listener even kinder

2. There are several ways to seduce: (a) Quick action with arms and certain other attachments; (b)....

3. There are several kinds of sentences: For instance numbers placed in the proper order (eg, 283 [Two of you ate 3 of those cookies), while [b[....)

Any chance you can post the poem or paragraph the sentence was in? Removing a sentence completely from it's surroundings can change its meaning.

Words can make one happy,
Words can bend one's mind;
Words can make one grumpy,
*******Words can make one kind.

Words can illuminate a man,
Words can make one weep;
Words can hurt so much,
That a man cannot even sleep.

Words can hide the truth,
Words can strike the heart;
Words can provoke the youth,
To make a revolution start.

Words can give one freedom,
Words can push one to heights;
Only words have such powers,
To separate wrongs from rights.

Words are more than missiles,
That can make one just die;
but words, if hit, cause much damage,
That makes one forget to try.

Words before being spoken,
Are under our total control;
But after we speak the words,
We fall under their control!

It means that the right choice of words, when spoken to us, can make us feel sympathetic and forgiving to the speaker.