Loose translation; "There is an endless number of possibilities", or maybe more word-to-word translation "Possibilities are of inexhaustible quantity".
I've been thinking about this one a lot of times in my life. There was an endless number of things that could be in this bulletin board. And yet there was this.
Sometimes we act like our lives are train on track that is moving in some expected direction, yet our lives are really full of endless possibilities. Just to realize this opens new doors.
I am walking on the moon
Or on the sky
It can be scary
We can't do anything about it
(Makes more sense in Czech).