Can a man still be brave if he’s afraid. That is the only time a man can be brave.
It took untold generations to get you where you are. A little gratitude might be in order. If you're going to insist on bending the world to your way, you better have your reasons.
We must, however, acknowledge, as it seems to me, that man with all his noble qualities still bears in his bodily frame the indelible stamp of his lowly origin.  
我们需要创造增强我们人性的技术,而不是削弱它。