Stephen Hawking
If aliens visit us, the outcome would be much as when Columbus landed in America, which didn't turn out well for the Native Americans.
More quotes and aphorisms
You can't fit a round peg...In winter, the stars seem to have rekindled their fires...I would much rather feel comfortable and feel beautiful...The power of youth is the common wealth...We can be tired, weary and emotionally distraught...The truest characters of ignorance are vanity and pride...