“Gratitude is a sign of maturity...Where there is appreciation: there is also courtesy and concern for the rights and property of others.”

“Our society is afflicted by a spirit of thoughtless arrogance unbecoming those who have been so magnificently blessed. How grateful we should be for the bounties we enjoy. Absence of gratitude is the mark of the narrow, uneducated mind. It bespeaks a lack of knowledge and the ignorance of self-sufficiency. It expresses itself in ugly egotism and frequently in wanton mischief....Where there is appreciation, there is courtesy, there is concern for the rights and property of others. Without appreciation, there is arrogance and evil.Where there is gratitude, there is humility, as opposed to pride.”

“gratitude is the most exquisite form of courtesy.”

“By appreciation, we make excellence in others our own property.”

“Maturity begins to grow when you can sense your concern for others outweighing your concern for yourself.”

“Part of the maturity of the sciences is an appreciation of which questions are best left to other disciplinary approaches.”