Thankfulness is the beginning of gratitude. Gratitude is the completion of thankfulness. Thankfulness may consist merely of words. Gratitude is shown in acts. – Henri Frederic Amiel
Wonder, connected with a principle of rational curiosity, is the source of all knowledge and discover, and it is a principle even of piety but wonder which ends in wonder, and is satisfied with wonder, is the quality of an idiot. – Samuel Horsley