SvennoJ on 10 August 2015
Both, nature gives you the potential, nurture the chance to realize that potential.
No matter how hard you work, you can't alter your basic affinities. You can learn to utilize your mind to the best of your abilities, yet someone born smarter can still outperform you.
http://www.sciencedump.com/content/10-people-highest-iq-world-infographic
Try to catch up to those people...
