“ Ignorance more frequently begets confidence than does knowledge: it is those who know little, not those who know much, who so positively assert that this or that problem will never be solved by science. ”
Source: The Descent of Man
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Seven Deadly Sins: Wealth without work, Pleasure without conscience, Science without humanity, Knowledge without character, Politics without principle, Commerce without morality, Worship without sacrifice. 
The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom. 
I learned very early the difference between knowing the name of something and knowing something. 
I can calculate the motion of heavenly bodies but not the madness of people. 