Para progresar no basta …
Para progresar no basta actuar, hay que saber en qué sentido actuar.
Para progresar no basta actuar, hay que saber en qué sentido actuar.
Las voluntades débiles se traducen en discursos; las fuertes, en actos.
La ciencia es la progresiva aproximación del hombre al mundo real.
Procuremos más ser padres de nuestro porvenir que hijos de nuestro pasado.
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