“To resist the frigidity of old age, one must combine the body, the mind, and the heart. And to keep these in parallel vigor one must exercise, study, and love.”
“Old minds are like old horses; you must exercise them if you wish to keep them in working order.”
“One of your American professors said that to study religion was merely to know the mind of man, but if one truly wanted to know the mind of God, you must study physics.”
“A mind of moderate capacity which closely pursues one study must infallibly arrive at great proficiency in that study.”
“One should preach not from one's rational mind but rather from the heart. Only that which is from the heart can touch another heart. One must never attack or oppose anyone. If he who preaches must tell people to keep away from a certain kind of evil, he must do so meekly and humbly, with fear of God.”
“To acquire knowledge, one must study;but to acquire wisdom, one must observe.”