What does "It is warmer on the peaks than those in the valleys will ever know" mean?

I was looking for a phrase to put at the end of a worksheet just as a nice to have for the students when they were doing work and I came across the phrase:

"It is warmer on the peaks than those in the valleys will ever know".

It was unreferenced and the site did not explain its meaning either, can anyone tell me who said this, what it means and if possible, even how to use it?

meaning: when you've never experienced something, you don't understand how good it is. You don't know how warm / pleasant the sun is at the top of the peak because you live in the valley where the sun is blocked by the walls.

Never heard this metaphor before. You could use it when someone doesn't want to do something that they have never tried, that you know is good. They are happy to live in the valley, but they never go to the peak and appreciate the warmth.

Peaks are at a very high altitude and known to be colder and mostly uninhabited. Valleys are associated generally with prosperity, as streams will follow the course of the land and tend to flow into or near a valley.

Thus the saying is indicating that people who refuse to leave the comfort of the valley will never discover the aspects of the peak that can be enjoyed. They will live on under their prejudice.