For all our failings, despite our limitations and fallibilities, we humans are capable of greatness.
Carl SaganIf we are not able to ask skeptical questions, to interrogate those who tell us that something is true, to be skeptical of those in authority, then, we are up for grabs for the next charlatan (political or religious) who comes rambling along.
Carl SaganOur intelligence is imperfect, surely, and newly arisen; the ease with which it can be sweet-talked, overwhelmed, or subverted by other hardwired propensities - sometimes themselves disguised as the cool light of reason - is worrisome.
Carl SaganWhat an astonishing thing a book is. Itโs a flat object made from a tree with flexible parts on which are imprinted lots of funny dark squiggles. But one glance at it and youโre inside the mind of another person, maybe somebody dead for thousands of years. ... Books break the shackles of time. A book is proof that humans are capable of working magic.
Carl Sagan