Scientist Quotes and aphorisms about intelligence Louis Pasteur Fei-Fei Li Fei-Fei Li Rana el Kaliouby Rana el Kaliouby Carl Sagan James Lovelock Neil deGrasse Tyson ,, I think that intelligence is such a narrow branch of the tree of life - this branch of primates we ... Neil deGrasse Tyson ,, When we see animals doing remarkable things, how do we know if we're simply seeing tricks or signs ... Neil deGrasse Tyson