If you want to know the future, look at the past.

Compound interest on debt was the banker's greatest invention, to capture, and enslave, a productive society.

Don't become a seeker of success. Become a person of value.

Never lose a holy curiosity.

... it is a welcome symptom in an age which is commonly denounced as materialistic, that it makes heroes of men whose goals lie wholly in the intellectual and moral sphere.

Nature hides her secrets because of her essential loftiness, but not by means of ruse.

Man is, at one and the same time, a solitary being and a social being. As a solitary being, he attempts to protect his own existence and that of those who are closest to him, to satisfy his personal desires, and to develop his innate abilities. As a social being, he seeks to gain the recognition and affection of his fellow human beings, to share in their pleasures, to comfort them in their sorrows, and to improve their conditions of life.