“By perseverance the snail reached the ark”

“If you think you can do it, you can.”

“Science has done more for the development of western civilization in one hundred years than Christianity did in eighteen hundred years.”

“You must have the bird in your heart before you can find it in the bush.”

“The greatest works are done by the ones. The hundreds do not often do much, the companies never; it is the units, the single individuals, that are the power and the might.”

“Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful”