Indeed, the crowning proof of their valour and their strength is that they keep up their superiority without harm to others. Tacitus
To cause the face to appear in a mass of flame make use of the following: mix together thoroughly petroleum, lard, mutton tallow and quick lime. Distill this over a charcoal fire, and the liquid which results can be burned on the face without harm. Harry Houdini
My master Attalus used to say: "Evil herself drinks the largest portion of her own poison." The poison which serpents carry for the destruction of others, and secrete without harm to themselves, is not like this poison; for this sort is ruinous to the possessor. Seneca
We want better reasons for having children than not knowing how to prevent them. Nor should we represent motherhood as something so common and easy that everyone can go through it without harm or suffering and rear her children competently and well. Dora Russell
What astonished me was the very low toxicity of a substance that has such very great physiological power. A little pinch, 5 mg, every day, is enough to keep a person from dying of pellagra, but it is so lacking in toxicity that ten thousand times as much can be taken without harm. Linus Pauling