"We know next to nothing of what we're going to know in 20 or 50 years"

This quote by Leon Kass talks to the concept that our existing understanding is restricted and that there is a lot more to find out in the future. It suggests that our existing understanding of the world is only a portion of what we will understand in the coming decades. This quote motivates us to be available to new ideas and to be ready to learn and grow. It also works as a suggestion that our current understanding is not the end-all-be-all and that there is still much to be found. It is a reminder that the world is continuously changing and that our understanding of it should likewise change. This quote encourages us to be curious and to check out the unknown, as it is only through expedition that we can genuinely comprehend the world around us.