The joy of children in and with their environment must, therefore, be taken into account among the forces that build and shape the physical organs. They need teachers who look and act with happiness and, above all, with sincere and unaltered love. Such love, which flows, in a way, with warmth through the physical environment of children, can literally “blossom” the forms of the physical organs.
If you make a face to make a child feel grumpy, it hurts the child for the rest of his or her life. The kind of school plan you make is not here or elsewhere; what matters is what kind of person you are.
Rudolf Steiner, The Kingdom of Childhood