True friendship can afford true knowledge. It does not depend on darkness and ignorance.
Every addition to true knowledge is an addition to human power.
To know, is to know that you know nothing. That is the meaning of true knowledge.
To know that we know what we know, and to know that we do not know what we do not know, that is true knowledge.
All around me insisted that my doubts proved only my own ignorance and sinfulness; that they knew by experience they would soon give place to true knowledge, and an advance in religion; and I felt something like indecision.
Where there is shouting, there is no true knowledge.
The generous wish to share with all what is precious, to spread broadcast priceless truths, to shut out none from the illumination of true knowledge, has resulted in a zeal without discretion that has vulgarised Christianity, and has presented its teachings in a form that often repels the heart and alienates the intellect.
Scholastic learning and polemical divinity retarded the growth of all true knowledge.
To know what you know and what you do not know, that is true knowledge.
A true knowledge of ourselves is knowledge of our power.