A man is helpless and unsafe up to the measure of his ignorance. [ M. F. Tupper ]

Can we be unsafe where God has placed us, and where He watches over us, as a parent a child that he loves? [ Fenelon ]

As there are some flowers which you should smell but slightly to extract all that is pleasant in them, and which, if you do otherwise, emit what is unpleasant and noxious, so there are some men with whom a slight acquaintance is quite sufficient to draw out all that is agreeable; a more intimate one would be unsatisfactory and unsafe. [ Landor ]