You speak an infinite deal of nothing.

Look not to the faults of others, nor to their omissions and commissions. But rather look to your own acts, to what you have done and left undone.

Do not give your attention to what others do or fail to do; give it to what you do or fail to do.

I will not look at another's bowl intent on finding fault: a training to be observed.

There is poison in the fang of the serpent, in the mouth of the fly and in the sting of a scorpion; but the wicked man is saturated with it.

Avoid him who talks sweetly before you but tries to ruin you behind your back, for he is like a pitcher full of poison with milk on top.