"If I have seen further than others, it is by standing upon the shoulders of giants." - N

"Thinking is the hardest work there is, which is the probable reason why so few engage in it." - HF

"Two things are infinite, the universe and human stupidity, and I'm not sure about the universe." -A

"My advice to you is get married: If you find a good wife you'll be happy; if not, you'll become a philosopher." -S