Answer:
kind, kind-hearted, warm-hearted, soft-hearted, tender, feeling.
concerned, attentive, thoughtful, solicitous, responsible, considerate.
affectionate, loving, doting, fond, warm, benevolent, benign, humane, good-natured, gentle, mild, indulgent, sympathetic, understanding, receptive, compassionate, charitable, gracious. :)
He wanted to naturally express the aspects of how science gets done, and also depict the bad along with the good.
A window sill a young athlete
