Answer:
Creo que estas hablando de el primer signo el cual indica que se debe repetir el compás anterior. Se utiliza para repetir un fragmento que tiene uno o mas compases diferentes al final.
Answer:
Voltaire
Explanation:
Well it can't be John Lock, he is known for Natural Rights, Purpose of Gov't and Social Contract.
It can't be Newton and I don't know who Kant is, so Voltaire would be your best bet.