We are at the very beginning of time for the human race. It is not unreasonable that we grapple with problems. There are tens of thousands of years in the future. Our responsibility is to do what we can, learn what we can, improve the solutions and pass them on. It is our responsibility to leave the men of the future a free hand. In the impetuous youth of humanity, we can make grave errors that can stunt our growth for a long time. This we will do if we say we have the answers now, so young and ignorant; if we suppress all discussion, all criticism, saying, ‘This is it, boys, man is saved!’ and thus doom man for a long time to the chains of authority, confined to the limits of our present imagination. It has been done so many times before.

~ Richard Feynman from, http://www.brainpickings.org/index.php/2013/03/06/richard-feynman-responsibility-of-scientists/

Feynman wrote several great, short books that are not hard science. This, and “Surely You’re Joking, Mr. Feynman!”, are great places to start.