"On the mountains of truth you can never climb in vain: either you will reach a point higher up today, or you will be training your powers so that you will be able to climb higher tomorrow"

This quote by Nietzsche suggests that pursuing the fact is an effort that is constantly fruitful, even if you do not immediately attain success. He states that when you climb the "mountains of reality," that is, when you seek to comprehend the world around you or reveal surprise understanding, every effort, even if not successful, builds your strength and ability for future attempts. Thus, you will either achieve a higher level of understanding and knowledge of the truth today, or you will enhance your abilities to strive for even greater heights tomorrow.