The superficiality of many is ...

The superficiality of many is a result of deep fears. It takes spare time to think things out; it takes free time to mature. People in a hurry may not think well or mature well. The next best is a state of perpetual puerility.
The superficiality of many is a result of deep fears. It takes spare time to think things out; it takes free time to mature. People in a hurry may not think well or mature well. The next best is a state of perpetual puerility.

Quotes from the same author

In times of change, learners inherit the earth, while the learned find themselves beautifully equipped to deal with a world that no longer exists.
Man's chief goal in life is still to become and stay human, and defend his achievements against the encroachment of nature.
The Paleolithic hunters who painted the unsurpassed animal murals on the ceiling of the cave at Altamira had only rudimentary tools. Art is older than production for use, and play older than work. Man was shaped less by what he had to do than by what he did in playful moments. It is the child in man that is the source of his uniqueness and creativeness, and the playground is the optimal milieu for the unfolding of his capacities.
You cannot gauge the intelligence of an American by talking with him; you must work with him. The American polishes and refines his way of doing things-even the most commonplace-the way the French of the 17th century polished their maxims.
Craving, not having, is the mother of a reckless giving of oneself.