Most of the luxuries and many of the so-called comforts of life are not only not indispensable, but positive hindrances to the elevation of mankind.
Do not read the newspapers.
Nothing can rightly compel a simple and brave man to a vulgar sadness.
Everything that is printed and bound in a book contains some echo at least of the best that is in literature.
In the student sensuality is a sluggish habit of mind.
Be as the sailor who keeps the polestar in his eye. By so doing we may not arrive at our port within a calculable period, but we will maintain a true course.