Are You Not Satisfied in Hell?

Thomas aquinas said that in paradise you will know everything there is except the nature of god, no secrets. But then how to unite this with the fact that, by the phoenician, in paradise, you will be happy all the time? How can you enjoy seeing the suffering of others? Aquinas proposes stupid, i think, invalid answer. His answer is that you what will make you happy is not the suffering, but to witness the majesty of divine, divine justice.