Thorin stuck his arm out to stop Kili from boarding the boat as well.
"Not you. We must travel at speed, you will slow us down." he said firmly.
"No...I'm coming with you!" Kili protested in disbelief. "I'm going to be there when the door is opened, when we first look upon the halls of our fathers, Thorin..." he got more and more desperate as Thorin just shook his head.

"Kili, stay here and rest, join us when you're healed."
"Uncle, don't do this!" Fili jumped to his brother's defense. "We grew up on the tales of the Mountain, tales [i]you[/i] told us, you can't take that away from him!"
Thorin sighed and looked at the blonde twin in exasperation. "I cannot risk the fate of this quest for one dwarf, not even my own kin. One day you will be king and then you will understand." he said.
Fili narrowed his eyes at Thorin and went to get out of the boat to stand with his twin, but Thorin grabbed his arm to stop him. "Fili, don't be a fool. You belong with the company." the dwarf prince growled.
Fili wrenched his arm free and stepped back onto the dock. "I belong with my [i]brother[/i]." he said firmly.