Who said “He who knows only his own side of the case, knows little of that.”?

“He mastered whatever was not worth the knowing.”

“Knowledge is in the end based on acknowledgement.”

“There is much pleasure to be gained from useless knowledge.”

“To know all is not to forgive all. It is to despise everybody.”

“The greater our knowledge increases, the greater our ignorance unfolds.”

“As long as justice and injustice have not terminated their ever renewing fight for ascendancy in the affairs of mankind, human beings must be willing, when need is, to do battle for the one against the other.”

“If all mankind minus one, were of one opinion, and only one person were of the contrary opinion, mankind would be no more justified in silencing that one person, than he, if he had the power, would be justified in silencing mankind.”

“All good things which exist are the fruits of originality.”

“Ask yourself whether you are happy, and you cease to be so.”

“Originality is the one thing unoriginal minds cannot feel the use of.”

“That so few now dare to be eccentric, marks the chief danger of the time.”