150.
"The pinnacle of an education in science is the realization that you are mediocre.That you are made of the same elements as dirt, and that 60% of your DNA is identical to that of a fruit fly. It is the knowledge that you were incredibly lucky to ever be born, and that you will inevitably die. But with this revelation comes an inescapable humility and clarity that leaves no room for selfishness, and gives you every reason to cherish your fellow humans during our short time on this planet. You will realize that only your actions will bring about what you want to see. Once you realize you are powerless against this universe, do you realize how powerful you can be."