Books break the shackles of time. A book is proof that humans are capable of magic - Carl Sagan

A book is proof that humans are capable of working magic.

A idéia de que Deus é um gigante barbudo de pele branca sentado no céu é ridícula. Mas se, com esse conceito, você se referir a um conjunto de leis físicas que regem o Universo, então claramente existe um Deus. Só que Ele é emocionalmente frustrante: afinal, não faz muito sentido rezar para a lei da gravidade!

Society corrupts the best of us. It is a little unfair, I think, to criticize a person for not sharing the enlightenment of a later epoch, but it is also profoundly saddening that such prejudices were so extremely pervasive. The question raises nagging uncertainties about which of the conventional truths of our own age will be considered unforgivable bigotry by the next.

It has two rules. First: there are no sacred truths; all assumptions must be critically examined; arguments from authority are worthless. Second: whatever is inconsistent with the facts must be discarded or revised.