What are quotes that Jonas made?
Well, Jonas said a lot of things and a lot of very important things. He makes a lot of realizations throughout the book and starts to question his society and Sameness. Here's one that I think is significant.
"Things could change, Gabe. Things could be different. I don't know how, but there must be some way for things to be different. There could be colors. And grandparents. And everybody would have memories. You know about memories."
In this quote he mentions specific things from the memories he's received from the Giver -- things that existed before Sameness.
Another one that is significant is "We really have to protect people from wrong choices." This is early on when Jonas is first making realizations about his community. He has a conversations with the Giver in which he wants to be able to make simple choices like what color of tunic he'll wear. But he later questions that thinking that there would be chaos if people could make choice about their jobs or spouses.
It is true that Jonas said a lot of things. Another thing he aid in the story was, "Giver, what causes you pain." Jonas is wondering at this point in the story about suffering. He knows that at some point the Receiver is supposed to suffer, but he doesn't yet understand the anguish of emotional and mental suffering, he only knows about physical suffering in the form of a sunburn so he doesn't understand why people believe that pain hurts so much. He is soon to learn about what it means to suffer and experience real pain, but he will also learn true and genuine joy from it.