After believing “all ideas are God’s ideas,” the 34-year-old blames earlier plagiarism on immaturity. Dale Partridge has made a living for most of the past decade by saying pithily positive things on the internet. Best known for starting Sevenly, a social-good clothing company that claimed to raise millions for charity, Partridge has attracted hundreds of thousands of social media followers with his knack for spotting social trends and for his nearly endless supply of motivational sayings, perfect for a T-shirt or Instagram post. Now the Bend, Oregon, serial entrepreneur, social media guru, and bestselling author—who left Sevenly in 2014 (editor’s…