moral
There are moral standards in all societies, and these standards vary from society to society. however, one fundamental moral standard for everyone is that an individual should be able to tell from right from wrong, and that since the individual knows what is the right thing to do, he/she should not do the wrong (bad) thing against his/her conscience.
Moral is very important because without moral or moral standards for its people, a society will not function properly. For instance, what if everyone spits on the ground and cut down all the trees? this would lead to the destruction of the environment. by destroying the environment, the world will be in chaos one day because lives will be destroyed. also, if everyone does bad things to everyone else, how can this world function? thus, moral standard is very important.
the dictionary definition of moral is: of, pertaining to, or concerned with the principles or rules of right conduct or the distinction between right and wrong; ethical. this definition clearly demonstrates that each individual has the responsiblity to behave properly in a society and to not do things against his/her conscience.

One individual must never prefer himself so much even to any other individual, as to hurt or injure that other, in order to benefit himself, though the benefit to the one should be much greater than the hurt or injury to the other. The poor man must neither defraud nor steal from the rich, though the acquisition might be much more beneficial to the one than the loss could be hurtful to the other. The man within immediately calls to him, in this case too, that he is no better than his neighbour, and that by this unjust preference he renders himself the proper object of the contempt and indignation of mankind; as well as of the punishment which that contempt and indignation must naturally dispose them to inflict, for having thus violated one of those sacred rules, upon the tolerable observation of which depend the whole security and peace of human society. There is no commonly honest man who does not more dread the inward disgrace of such an action, the indelible stain which it would for ever stamp upon his own mind, than the greatest external calamity which, without any fault of his own, could possibly befal him; and who does not inwardly feel the truth of that great stoical maxim, that for one man to deprive another unjustly of any thing, or unjustly to promote his own advantage by the loss or disadvantage of another, is more contrary to nature, than death, than poverty, than pain, than all the misfortunes which can affect him, either in his body, or in his external circumstances.