The temptation was great to muster what force we could and put up a fight. It's the easiest way out, and the most satisfactory to self-respect — but,… - Isaac Asimov

The Solarians have given up something mankind has had for a million years; something worth more than atomic power, cities, agriculture, tools, fire, everything; because it's something that made everything possible (...) The tribe, sir. Cooperation between individuals.

I'm a man of business. If it adds up to a plus mark, I'm for it.

We would grow tired of it, Grandpa, if it were beautiful all the time. A little change from night to night is good for us.'

'For you, because you're young, Wanda. You have many, many evenings ahead of you. I don't. I want more good ones.