"The self thus becomes aware of itself only by its opposition to another self "

“The development of knowledge is a continual restructuring that leads towards new types of ...”

“Equilibration is a major factor in this perpetual production of novelty”

“Knowledge, then, is a system of transformations that become progressively adequate ”

“Every acquisition of accommodation becomes material for assimilation, but assimilation alw...”

“If past history was all there was to the game, the richest people would be librarians”

“Stay humble in victory and gracious in defeat.”

“There is just one thing that makes your dream become impossible: the fear of failure.”

“If you’re brave enough to say goodbye, life will reward you with a new hello.”

“Plan for what it is difficult while it is easy, do what is great while it is small.”

“The ego is not master in its own house.”

“Don’t be afraid to be ambitious about your goals. Hard work never stops. Neither should ...”

“You're under no obligation to be the same person you were 5 minutes ago.”

“If you see me in a fight with a bear, pray for the bear”

“The simple things are also the most extraordinary things, and only the wise can see them.”

“No great mind has ever existed without a touch of madness.”

“If you don't find a way to make money while you sleep, you will work until you die”