"Give me a mystery - just a plain and simple one - a mystery which is diffidence and silence, a slim little bare-foot mystery: give me a mystery - just one!"

Yevgeny Yevtushenko's quote stimulates a yearning for simplicity and depth, covered in the enigmatic appeal of mystery. The plea for "a plain and easy" secret recommends a desire to strip away the intricacies and diversions that frequently cloud human understanding, yearning rather for something pure and unembellished. A "plain and easy" mystery does not require to be grand or complicated to mesmerize; it's the fundamental, fundamental unknowns that often provoke the most extensive reflection.

The expression "a mystery which is diffidence and silence" adds layers of meaning. Diffidence implies a modest or modest quality, recommending that the mystery desired is simple, not seeking attention or honor. It is quiet and reserved, yet extensive, catching the essence of those quiet enigmas in life that do not reveal themselves easily however demand a deeper, introspective engagement to be understood. Silence, in this context, could represent the absence of noise, mayhem, or distraction, inviting the candidate into an area of contemplation where the mystery can be pondered without external disturbance.

The images of "a slim little bare-foot mystery" conjures a picture of something innocent, untouched, and plain. The barefootedness symbolizes a return to nature, to simplicity, to an earthy, grounded state of being that is devoid of artifice or pretense. This evokes a sense of purity and authenticity, unadulterated by the complexities of modern life. The secret, therefore, ends up being almost childlike in its simpleness, yet profound in its quiet existence.

Lastly, the duplicated plea for "simply one" secret underscores a deep, particular focus and craving. In a world rife with innumerable, overwhelming intricacies, there is a yearning for just one real, untouched secret to consider-- a single unknown that can fill the soul with marvel and provoke thoughtful reflection. Yevtushenko's words resonate as a meditation on the power of simpleness and the profound charm found in life's humblest mysteries.