It is bad if you praise, and worse if you reprove a thing, I mean, if you do not understand the matter well. - Leonardo da Vinci

It is ill to praise, and worse to reprimand in matters that you do not understand.

Love, Fear, and Esteem, — Write these on three stones.

There will be many men who will move one against another, holding in their hands a cutting tool. But these will not do each other any injury beyond tiring each other; for, when one pushes forward the other will draw back. But woe to him who comes between them! For he will end by being cut in pieces.

Men fight wars and destroy everything around them. The earth should open and swallow them up. He who does not value life does not deserve it. Never destroy another life through rage, or through malice.