Peirce, Charles Sanders

"All thinking is dialogue."

"The final aim of reasoning is to discover the truth."

"Character can be built through action."

"Music is the speech of angels."

"The mind does not work in a straight line."

"Observation must be assisted by theory."

"Knowledge is not a commodity to be hoarded."

"Action is the aim of all intellectual work."

"The foundation of all reasoning is analogy."

"To be ignorant is not shameful; to refuse to learn is."

"Nature is the language of God."

"What is life but the exercise of thinking?"

"Success is the child of patience and persistence."

"A man of sense only talks of what he knows."

"Beauty is the promise of function."

"The question of religion is essentially a question of life and death."

"Experience is our only teacher."

"The mind is not a vessel to be filled but a fire to be kindled."

"Art is the activity most opposed to materialism."

"We are as much as we have experienced."

"Civilization advances by extending the number of operations we can perform without thinking."

"The most powerful force is imagination."

"Our thoughts are ruled by less rational processes than we like to believe."

"Truth has a certain way of asserting itself."

"Self-control is the foundation of all strength."

"The business of thinking is the most important business of life."

"Passion without reason is blindness."

"We cannot escape our own nature."

"The road to success is always under construction."

"Literature is the crystallization of life."