"La Ciencia en ningún momento está totalmente en lo cierto, pero rara vez está completamente equivocada y tiene en general mayores posibilidades de estar en lo cierto que las teorías no científicas."
"There lies before us, if we choose, continual progress in happiness, knowledge and wisdom. Shall we instead choose death, because we cannot forget our quarrels? I appeal as a human being to human beings; remember your humanity, and forget the rest."
"We know very little, and yet it is astonishing that we know so much, and still more astonishing that so little knowledge can give us so much power."
"To fear love is to fear life, and those who fear life are already 3-parts dead."
"The world is full of magical things patiently waiting for our wits to grow sharper."
"To like many people spontaneously and without effort is perhaps the greatest of all sources of personal happiness."