"Perplexity is the beginning of knowledge." --Kahlil Gibran
Not knowing something is a great freedom, because the innate curiosity can work and it's wonderful to find out something new through first-hand experience.
"Every new beginning comes from some other beginning's end." --Seneca
I also think of seeds and starts (baby plants that usually begin indoors, or in a greenhouse). In order to make a new start in anything, one has to be vulnerable (uncertain) on some level. For the seed to sprout, it needs the right atmosphere or conditions (sunlight, water, soil nutrients), but also needs love and care, which are the ingredients in life that come from the heart.