“Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.”

“There can be no friendship without confidence, and no confidence without integrity.”

“Between falsehood and useless truth there is little difference. As gold which he cannot spend will make no man rich, so knowledge which cannot apply will make no man wise.”

“What is written without effort is in general read without pleasure.”

“I found our speech copious without order, and energetic without rules”

“Happiness," said he, "must be something solid and permanent, without fear and without uncertainty.”

“Sir, there is nothing too little for so little creature as man. It is by studying little things that we attain the great knowledge of having as little misery and as much happiness as possible.”