Frederick Setjadiningrat

“He who is cruel to animals becomes hard also in his dealings with men. We can judge the heart of a man by his treatment of animals.”
― Emmanuel Kant

“We are enriched not by what we possess, but by what we can do without.”
― Immanuel Kant

“Experience without theory is blind, but theory without experience is mere intellectual play.”
― Immanuel Kant

“Thoughts without content are empty, intuitions without concepts are blind.”
― Immanuel Kant, Critique of Pure Reason