Perhaps we’ve never been visited by aliens because they have looked upon earth and decided there’s no sign of intelligent life.
Interpretation
Humanity may not appear intelligent enough to attract alien attention.
This quote by Neil Degrasse Tyson suggests that if extraterrestrial beings exist, they may have assessed Earth and determined that it does not display evidence of advanced intelligence. It prompts reflection on humanity's behavior and accomplishments, questioning whether our actions reflect true intelligence or if there is a lack thereof that could dissuade potential extraterrestrial visitors.
In practice
During a science seminar discussing the possibilities of extraterrestrial life.
The problem is that many people operate on the assumption that NASA should go to Congress every year with hat in hand and justify it every year. Well, I see it as the greatest economic driver that there ever was. Economic drivers don't need justification.
The press still thinks [global warming] is controversial. So they find the 1% of the scientists and put them up as if they're 50% of the research results. You in the public would have no idea that this is basically a done deal and that we're on to other problems, because the journalists are trying to give it a 50/50 story. It's not a 50/50 story. It's not. Period.
As a scientist, I want to go to Mars and back to asteroids and the Moon because I'm a scientist. But I can tell you, I'm not so naive a scientist to think that the nation might not have geopolitical reasons for going into space.
In just one year, the expenditure of of the U.S.'s military budget is equivalent to the entire 50-year running budget of NASA combined.
One of my great laments is that education today seems to have... be less about passion and more about process, more about tactic or technique.
Lots of people think, well, we're humans; we're the most intelligent and accomplished species; we're in charge. Bacteria may have a different outlook: more bacteria live and work in one linear centimeter of your lower colon than all the humans who have ever lived. That's what's going on in your digestive tract right now. Are we in charge, or are we simply hosts for bacteria? It all depends on your outlook.
Everyone has noticed how hard it is to turn our thoughts to God when everything is going well with us... While what we call 'our own life' remains agreeable, we will not surrender it to Him. What, then, can God do in our interests but make 'our own life' less agreeable to us, and take away the plausible sources of false happiness?
Analysis brings no curative powers in its train; it merely makes us conscious of the existence of an evil, which, oddly enough, is consciousness.
When the last red man shall have perished from the earth and his memory among the white men shall have become a myth, these shores will swarm with the invisible dead of my tribe. The white man will never be alone. Let him be just and deal kindly with my people, for the dead are not powerless.
I came to the conclusion long ago that all religions were true and that also that all had some error in them, and while I hold by my own religion, I should hold other religions as dear as Hinduism. So we can only pray, if we were Hindus, not that a Christian should become a Hindu; but our innermost prayer should be that a Hindu should become a better Hindu, a Muslim a better Muslim, and a Christian a better Christian.
Before birth; yes, what time was it then? A time like now, and when they were dead, it would be still like now: these trees, that sky, this earth, those acorn seeds, sun and wind, all the same, while they, with dust-turned hearts, change only.
At this point in history when all things which concern man and the structure and elements of history itself are suddenly revealed to us in a new light, it behooves us in our scientific thinking to become masters of the situation, for it is not inconceivable that sooner than we suspect, as has often been the case before in history, this vision may disappear, the opportunity may be lost, and the world will once again present a static, uniform, and inflexible countenance.
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