La comprensión del cambio climático puede tener profundas consecuencias básicas, porque el hombre está ejerciendo tremenda influencia en el medio amb… - Carl Sagan

Across the sea of space, the stars are other suns.

Vigorous criticism of new ideas is a commonplace in science. While the style of the critique may vary with the character of the critic, overly polite criticism benefits neither the proponents of new ideas nor the scientific enterprise. Any substantive objection is permissible and encouraged; the only exception being that ad hominem attacks on the personality or motives of the author are excluded. It does not matter what reason the proponent has for advancing his ideas or what prompts his opponents to criticize them: all that matters is whether the ideas are right or wrong, promising or retrogressive.

Those who seek power at any price detect a societal weakness, a fear that they can ride into office. It could be ethnic differences, as it was then, perhaps different amounts of melanin in the skin; different philosophies or religions; or maybe it’s drug use, violent crime, economic crisis, school prayer, or “desecrating” (literally, making unholy) the flag. Whatever the problem, the quick fix is to shave a little freedom off the Bill of Rights.