This is a quote from Gene Stratton-Porter's A Girl of the Limberlost:
"To the extent of my brain power I realize Your presence, and all it is in me to comprehend of Your power. Help me to learn, even this late, the lessons of Your wonderful creations. Help me to unshackle and expand my soul to the fullest realization of Your wonders. Almighty God, make me bigger, make me broader!"