Linda Elder's detailed drawings of Great Thinkers adorn the covers of these postcards and blank cards. For the postcards, the Great Thinkers are on the front, with a quote and room for your message on the back. The blank cards feature Great Thinker artwork on the front, with a quote from that Thinker on the inside left; the right side is blank for your message. You'll receive a pack of 4 different postcards (1 of each): Lincoln, Gandhi, John Stuart Mill, and Thoreau, and 4 blank cards (1 of each Great Thinker mentioned above) are also included in the set, with an envelope for each card. These cards are a wonderful way to inspire others – either with the Great Thinker's thoughts, or your own.