"Having knowledge but lacking the power to express it clearly is no better than never having any ideas at all"

"There is only one way to happiness, and that is to cease worrying things which are beyond the power of our will"

"Knowledge of what is possible is the beginning of happiness"

"The seat of knowledge is in the head, of wisdom, in the heart"

"What we want is to see the child in pursuit of knowledge, and not knowledge in pursuit of the child"

"Never stop learning; knowledge doubles every fourteen months"

"Faith consists in believing when it is beyond the power of reason to believe"

"In the councils of government, we must guard against the acquisition of unwarranted influence, whether sought or unsought, by the military-industrial complex. The potential for the disastrous rise of misplaced power exists and will persist"

"Knowledge is knowing that we cannot know"

"Where knowledge ends, religion begins"

"The more extensive a man's knowledge of what has been done, the greater will be his power of knowing what to do"