Sons of Africa, Callie Roos and Stef du Plessis are two significant motivational speakers that you need to hear. If you want your staff to be moved and inspired to become significant and to make a real difference in your organisation, and in this amazing country we call home, then Callie and Stef are the motivational speakers you must choose. These two Sons of Africa are the ultimate meaning-makers. They’re significant players in helping build this amazing country and its people into something magnificent. Once you have heard them speak, you will not be able to get the genie back into the bottle … you will forever be changed and unchained.