Honestly I haven’t found anyone who really looks good in a candid photo. However, the quality of a candid photo is to catch the genuine, unrefined emotion that’s lost during planned or staged photos. This is particularly true for famed historical figures or celebrities.
Why is it so? The one reason is our intuition of who they are is so heavily guided by textbooks and the media. We banish from our thoughts who they really were. The 23 pictures of celebrities and famed people presented down here will give exactly that: who these people really were/are.