We tried the following experiment:
Take three seeds. Plant them, each in a different container. Speak nicely to one of them. Say nothing to the next. Speak harshly to Third.

Results of The Plant Experiment:

HARSH WORDS:
Plant Hardly Grows – Stayed In Ground. Grew Roots Downward

NO WORDS:
Plant Starts To Bud. Minimally Coming Out Of Ground

NICE WORDS/ POSITIVE / PLEASANT SPEECH:
Plant Buds. Comes Out Of Ground. Grows 2 Cm.
Grows 2 Cm Higher Than Others.

Speak Pleasantly To Plants To Make Them Grow

CONCLUSIONS:
If Plants Grow By Listening To Positive Speech – Even More So Should Humans.

Positive Speech Is Necessary For The Proper Development Of All Of Hash-M’s Creatures.

Kal Vachomer / A Fortiori – If We Need To Speak Nicely To Plants, Even More So Should We Speak Nicely TO And ABOUT Our Family, Friends & Brothers & Others.