Had a man the best intentions in the world, and were the farthest removed from all injustice and violence, he would never be able to make himself be much regarded, without a moderate share, at least, of parts and understanding.
 David Hume, An Enquiry Concerning the Principles of Morals (1751). copy citation

Context

“The figure which a man makes in life, the reception which he meets with in company, the esteem paid him by his acquaintance; all these advantages depend as much upon his good sense and judgement, as upon any other part of his character. Had a man the best intentions in the world, and were the farthest removed from all injustice and violence, he would never be able to make himself be much regarded, without a moderate share, at least, of parts and understanding. What is it then we can here dispute about? If sense and courage, temperance and industry, wisdom and knowledge confessedly form a considerable part of PERSONAL MERIT: if a man, possessed of these qualities, is both better satisfied with himself, and better entitled to the good-will, esteem, and services of others, than one entirely destitute of them;” source