It would be wise to believe not only in the capability of humans to create a sustainable humane civilization, but also in the certainty that they will do so.
Humanity is capable of greatness, but it has not yet reached the sublime, and for now, it is a grain of sand in the cosmic desert. But, if it fully comprehends the power of its humanity and continues to develop it, it will be capable of creating a strong, humane civilization, becoming great and incredible.
A person's spiritual development begins with their conscious desire for knowledge of important worldview issues, goodness, humanity, and understanding and perception of beauty.