Now that's only true if you look at it this way.
I was born tall, i was the second smallest kid in school.
Nobody is born smart. Most babies are hindered to grow smart by taking over stupid believes from their trusted ones (parents, idols and others).
Nobody is born rich.
Instead we're all born naked, hungry, poor and frightened. Life is just life, and that is the fair part of it.
I'll tell you what's not fair: Society is not fair, distribution of wealth or education is not fair, being pre-judged by other humans is not fair, stigmatization is not fair.
Life is nothing like that. Instead, it's part of the current stage of human evolution. We're all almost as dumb as apes, but we believe that we are great, a master species. The most important differences are that our thumbs are opposed to the other fingers and that we developed communication (which is still faulty and primitive, btw).
It's wrong to assume we are homo sapiens (wise humans), we didn't remotely touch the state of "wise" in any way, but this narrative lets us believe so, which is also what keeps us from reaching anything like real wisdom.
Only some did yet, and those keep quiet. For a reason.
Having said all of that, Oom, each of us is still best off to attempt to identify our personal areas of strengths, weaknesses, interests, passions, and also to try to make something out of the whole short period of time that we are on the planet.
Probably all people will advance in their learning, and some people are going to prepare a lot for various areas of interest that might be more focused or ambitious than others, some will achieve and go beyond their wildest dreams and others will fall way short of anything close to their most modest of dreams.
Some people become very interesting to listen to when there are in their 50s or older, and others seem to have little to no insight regarding how the world works or what their role has been in such complex and changing world. Don't get me wrong, I am not even really claiming that some people don't have anything at all to contribute because frequently even seemingly dumb folks will have certain kinds of talents or speciality areas in which they know more than others or can do more unique tasks than others, but still there are both levels that have been achieved and also variations in starting point levels too.
Sure there is the expression that the apple does not fall very far from the tree, but at the same time, sometimes there can also be a considerable amount of accomplishment variation, even within families and within generations that is not always progressive, even while accounting for varying environmental differentiation factors... and even counting for how preparation had met opportunity and the ability to have luck or to be able to take advantage of such luck if it were to present itself.
Some people aspire for greatness and others for mediocrity, which also plays out with the concept of whether or not they might have achieved some kind of wisdom in their life, if they are lucky enough to live long enough to achieve, too.