Berkeley, George

"Man is not a machine but a spiritual being capable of reason and love."

"The greatest impediment to knowledge is the illusion of having already obtained it."

"All our ideas are connected to sensation, either present or remembered."

"Dreams are the mind's way of processing the images of the day."

"The foundation of all science is observation, not speculation."

"To be ignorant of what happened before we were born is to remain always a child."

"Art is the expression of the soul's deepest convictions."

"The love of God is the highest love, and all other loves must be ordered by it."

"Power without virtue is the most dangerous force in the world."

"The mind that is not fed with knowledge will starve in ignorance."

"Every effect must have a cause, and that cause must be God or mind."

"True friendship is based on mutual respect and the pursuit of virtue together."

"The strength of conviction is worth more than the strength of argument."

"We are not passive receivers of ideas but active perceivers."

"To change one's mind in light of better evidence is a sign of wisdom, not weakness."

"All temporal things pass away, but eternal truths remain."

"The health of the soul depends upon the health of the mind."

"Adventure is the pursuit of knowledge beyond the boundaries of the familiar."

"Imagination is the foundation of all knowledge and all progress."

"The greatest wealth is the wealth of understanding."

"History teaches us that those who forget the past are condemned to repeat it."

"The pursuit of justice is the noblest of all human endeavors."

"In solitude, the mind finds its truest nature."

"All knowledge is ultimately a knowledge of God's creation."

"The mind must be trained like the body, through discipline and practice."

"True leadership is the ability to inspire others to virtue."

"The measure of a person's worth is not their possessions but their character."

"Fear is the enemy of truth and the servant of ignorance."

"To persevere in the pursuit of virtue is to find true success."

"The grateful heart is always rich, regardless of circumstances."