Yes. We believe Warren Buffett has important made comments on this matter. An investor can withdraw a portion of his or her dividends and principal each year to provide income. Warren Buffett explains that he gives 5% of his net worth to charity each year by slicing off 5% of his Berkshire Hathaway holdings. But due to appreciation in Berkshire Hathaway, his net worth has continued to grow. Based on current expected returns, a withdrawal of no greater than 4% per annum should be sustainable, but again, investors should discuss this with their trusted advisor.