"Mountains were once my big adventure but is is over since a long time; I still dream from the wonderful days sometimes, read also a few pages from a mountain book. But the thought of doing again active mountain climbing has faded"

Fritz Zwicky's quote reflects a sense of fond memories for his previous experiences in the mountains. He keeps in mind the wonderful days he invested there and still reads about them in books. Nevertheless, the thought of actively mountain climbing once again has actually vanished. This might be due to age, physical limitations, or merely an absence of interest. It is a tip that life is ever-changing and that we should accept and welcome the changes that come our method. Zwicky's quote is a suggestion to treasure the memories of our previous adventures and to appreciate the present moment. It is also a suggestion to never take life for given and to maximize every opportunity.