What does it cost?

What does it cost to let a soul bloom and grow, But love and sincerity, my dear fellow? Like a gentle smile on a passing face, Wrapping me like a warm embrace. A soothing hand on my shaking one, Its warmth still lingers though all is gone. A shared laugh in the storm we face, As the gloom fades without a trace. "You are the best," beamed a child I once saw, And O'—when did older souls let kindness go? So tell me now, my dear fellow: Did it ever cost to let a soul grow?