Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
You can use this work for any purpose, as long as it is not primarily intended for or directed to commercial advantage or monetary compensation. You should also provide attribution to the original work, source and licence. Read more about this licence.
Credit
A pair of eyes expressing the character of a solid thinker, unhurried, yet intrepid if required (according to Lavater). Drawing by T. Holloway, ca. 1794. Attribution-NonCommercial 4.0 International (CC BY-NC 4.0). Source: Wellcome Collection.