“Doubt grows with knowledge.”

“We know accurately only when we know little; doubt grows with knowledge.”

“Doubt can only be removed by action.”

“Everybody wants to be somebody,but nobody wants to grow... ”

“Just begin and the mind grows heated; continue, and the task will be completed!”

“All the knowledge I possess everyone else can acquire, but my heart is all my own.”

“No doubt you are right... there would be far less suffering amongst mankind if men... did not employ their imaginations so assiduously in recalling the memory of past sorrow, instead of bearing their present lot with equanimity.”