"All theory, dear friend, is gray, but the golden tree of life springs ever green."

"Time flies over us, but leaves its shadow behind."

"The difficulty lies not so much in developing new ideas as in escaping from old ones"

"A dream you dream alone is only a dream. A dream you dream together is reality."

"Life can only be understood backwards; but it must be lived forwards."

"But friendship is precious, not only in the shade, but in the sunshine of life; and thanks to a benevolent arrangement of things, the greater part of life is sunshine."

"If one advances confidently in the direction of his dreams, and endeavors to live the life which he has imagined, he will meet with a success unexpected in common hours."

"You can no more win a war than you can win an earthquake."

"There is nothing permanent except change."

"Freedom is nothing but a chance to be better."