The prudent man is not willing to subject himself to any responsibility which his duty does not impose upon him. He is not a bustler in business where he has no concern; is not a meddler in other people’s affairs
 Adam Smith, The Theory of Moral Sentiments (1759). copy citation

Context

“If he enters into any new projects or enterprises, they are likely to be well concerted and well prepared. He can never be hurried or drove into them by any necessity, but has always time and leisure to deliberate soberly and coolly concerning what are likely to be their consequences. The prudent man is not willing to subject himself to any responsibility which his duty does not impose upon him. He is not a bustler in business where he has no concern; is not a meddler in other people’s affairs; is not a professed counsellor or adviser, who obtrudes his advice where nobody is asking it. He confines himself, as much as his duty will permit, to his own affairs, and has no taste for that foolish importance which many people wish to derive from appearing to have some influence in the management of those of other people.” source