A man will never change his mind if he have no mind to change.

Even supposing there were some spiritual advantage in celibacy, it ought to be completely voluntary.

Proverbs accordingly are somewhat analogous to those medical Formulas which, being in frequent use, are kept ready-made-up in the chemists’ shops, and which often save the framing of a distinct Prescription.

Trust, therefore, for the overcoming of a difficulty, not to long-continued study after you have once become bewildered, but to repeated trials at intervals.

He who is not aware of his ignorance will be only misled by his knowledge.

The happiest lot for a man, as far as birth is concerned, is that it should be such as to give him but little occasion to think much about it.

Ethical maxims are bandied about as a sort of current coin of discourse, and, being never melted down for use, those that are of base metal are never detected.