Are these sentences natural and fine?

[sumon.]

Hi,
#Don't get angry for small causes or reasons.
#Anger is the most dangerous act or thing of human life. So be careful of that.
#Crying indicates that your heart is so pure that that can not deceive anyone, it is a feeling of heart that can be known by someone who has a heart.
#It was happy crying on the dad's face after getting back his lost child or kid.
Thank you.

 

[shannico]

I'll give it a go.

Hi,
#Don't get angry for small causes or reasons. Don't get angry over small or trivial issues.
#Anger is the most dangerous feeling [STRIKE]act or thing of human life[/STRIKE] of all. So be [STRIKE]careful[/STRIKE] wary of that.
#Crying indicates that your heart is so pure that [STRIKE]that[/STRIKE] it can not deceive anyone, it is a feeling that comes from the heart which can only be known by someone who has a heart.
[STRIKE]#It was happy crying [/STRIKE]They were happy tears on the dad's face after getting back his lost child or kid.
Thank you.

Hope it helps