Peirce, Charles Sanders

"Growth is the only evidence of life."

"Probability is the very guide of life."

"One cannot take a step in inquiry without symbols."

"The security of our knowledge lies in the method, not in any particular result."

"Science is to be preferred to art because it aims at truth."

"A perfection of meaning only comes through time and experience."

"The universe appears to be composed of ideas."

"In the long run, the truth will conquer all difficulties."

"Logic is rooted in the social principle."

"Every cognition involves effort and exertion."

"The chief danger to freedom of thought is the thought of authority."

"Numbers are symbols for relations."

"Continuity may be called pure chaos, or a continuum."

"The only way to learn is through experience and habit."

"The final cause of semiosis is to be found in the general welfare."

"We gain nothing by working against the grain of experience."

"A metaphor is a sign which in a different form, something similar to the thing meant."

"The true methods of modern science are of an experimental character."

"Solitude tends to produce ideal sentiments in which man approximates the divine."

"The perfection of beauty consists in the harmony of its parts."

"Ideas are what makes us human and what makes us capable of progress."

"To every proposition the universe makes answer aye or nay, nothing more."

"All the secrets of nature are in the structure of matter."

"The synthesis of feeling is melody; the synthesis of action is plot."

"We gain nothing by working against the current of our times."

"Consciousness, on the lowest terms, is nothing other than a feeling."

"The first effect of reasoning is to render the passions moderate."

"God is best understood as that upon which all else depends."

"In thinking we use the whole mind, not merely its intellectual capacities."

"The law of love is supreme in metaphysics."