Never offer to teach a fish to swim. – Proverb

He who undertakes to be his own teacher has a fool for a pupil. – Proverb

Whatever you teach, be brief; what is quickly said the mind readily receives and faithfully retains, while everything superfluous runs over as from a full container. Who knows much says least. – Proverb

When will the public cease to insult the teachers calling with empty flattery? When will men who would never for a moment encourage their own sons to enter the work of the public schools cease to tell us that education is the greatest and noblest of all human callings? – William C. Bagley