Thomas Aquinas

"All knowledge begins with names."

"To know one's self is the beginning of wisdom in living."

"The greatest act of charity is the instruction of the ignorant."

"Human laws are enforced by fear of punishment; divine laws are enforced by conscience."

"The more perfect a thing is, the more vigorously it desires to reproduce."

"Patience is not only a virtue but the foundation of all other virtues."

"The end of the speculative intellect is truth; the end of the practical intellect is action."

"A human being cannot live in isolation; we are social creatures by nature."

"The habits we form during our youth shape the character of our entire lives."

"For those who truly believe, no argument is necessary; for those who do not believe, no argument is sufficient."

"The universe is governed by order and reason."

"To achieve something great, one must possess the virtue of perseverance."

"The beatific vision is the supreme happiness of the soul."

"Art is the imitation of nature in her manner of operation."

"Differences of opinion are not incompatible with unity."

"The intellect is the eye of the soul."

"Every defect in a creature mirrors a deficiency in knowledge."

"The preservation of the species is a natural and divine law."

"There is no love without hope, nor hope without love."

"The beginning of love is to let those we love be perfectly themselves."

"Envy is the sorrow at another's good."

"Learning consists of adding new facts, but wisdom consists of improving one's judgment."

"The conscience is the voice of God within us."

"Human nature is perfected through education."

"The purpose of an argument is not victory but agreement."

"Truth is so obscure in these times and falsehood so established that unless we love the truth we cannot know it."

"The soul cannot be perfected except through the knowledge of God."

"To live means to grow; to grow means to change."

"The common good cannot flourish unless individuals flourish."

"Grace builds upon nature; it does not destroy it."