Ken Thomson is Canada’s premiere art collector. He’s also Canada’s wealthiest person with a fortune worth $23 billion (CDN). Now 79, he says he plans to give “$70-million in cash and $300 million in art to an expanded and renovated Art Gallery of Ontario,” and that the gifts are only “the start of a series of gifts and loans to that institution.” Tuesday he “staggered the Canadian art world by announcing he would donate in trust an estimated 2,000 works to the AGO.”