It is a blessing,and a curse,to be highly intelligent,but most people's intelligence only benefits in the selfish department,and designing weapons of mass destruction,and whatnot,and how it can prosper them,and a person might not sleep all that great for their mind thinks too much,especially if they have a career where they are always trying to figure things out,but a person with a job at McDonald's,average I.Q.,might sleep like a baby.
Ignorance is bliss in this sense you do not have so much on your mind,the less stressed you are,which I have to go with that perhaps it is altogether a curse to be highly intelligent,for it results in only mankind benefitting self,and ignoring God,which the Bible says,God made man upright,but they sought out many inventions.