Tongue is interpreter of heart and key of personality

Correction of tongue and speech has assumed a majorimportance in moral discussions because tongue is interpreter of heart, representative of intellect, key of man's personality, and the most important window to man's soul.

In the other words, what is depicted on the tablet of man'ssoul( including mental, emotional and sentimental events ), firstof all emerges on the tongue and within his speeches. If in thepast, physicians recognized a major part of moderation andunbalance of temperament through the condition of tongue, nowadays psychoanalysts mostly seek mental problems withinthe individuals' speeches!

On these accounts, ethic scholars consider a specialimp ortance for correction of tongue and deem its correction asthe sign of spirit's perfection and strengthening of prominentmoral virtues and habits.

This reality is also stated in the traditions of the Prophet'sHouse A. S. in short and interesting phrases. Two followingp hrases narrated respectively from Imam Ali A. S. and ImamSadegh A. S. are evidences for this claim:

1- Man is hidden under his tongue.. [1]

«الْمَرْءُ مَخْبُوءٌ تَحْتَ لِسانِهِ» ..

That is to say not only scientific personality, but also moraland social personality and in general his humanistic personality is under his tongue, and as long as he has not spoken, his fault and virtue is concealed.

2- Firmness and straightness of belief is not possible withoutfirmness and straightness of heart, and the latter too will not

[1]NahjolBalaghe ,aphorisms ,no .841