It is clear that there is a very great deal to be learnt about the universe and the endless subtleties of its various manifestations. What about the moral side of man, or what people with a religious bent of mind would prefer to call the spiritual nature of man? How will this develop in the endless aeons of the future? Perhaps in most of these questions like Newton we are still standing on the shore while the great ocean of knowledge lies ahead. It is significant that after more than two centuries of the acquisition of knowledge eminent men of science still have similar feelings.
with limits, you have to know which ones you are supposed to accept, and which ones you must surpass. Do not waste your time trying to find the knowledge of the universe, that is Gods place and you cannot surpass it. Do spend time getting better at what you are good at and trying out what you are bad at. Limits are either for protection, or for shattering. There is no 'in between'. If there was, I highly doubt the world would be like it is today.
The knowledge of the Universe is not secret, but is placed in the heart of every grandma and grandpa who have nothing and yet give everything to their grandchildren, in the eyes of every mother holding her baby close to her heart, in the spirit of every father holding the hand of his child walking for the first time.