George Bernard Shaw on Education (He who can, does. He who cannot, teaches.).

Education
When a man teaches something he does not know to somebody else who has no aptitude for it and gives him a certificate of proficiency, the latter has completed the education of a gentleman.
A fool’s brain digests philosophy into folly, science into superstition, and art into pedantry. Hence University- education.
The best-brought-up children are those who have seen their parents as they are. Hypocrisy is not the parent’s first duty.
The vilest abortionist is he who attempts to mould a child’s character.
At the University every great treatise is postponed until its author attains impartial judgment and perfect knowledge. If a horse could wait as long for its shoes and would pay for them in advance, our blacksmiths would all be college dons.
He who can does. He who cannot, teaches.
A learned man is an idler who kills time with study. Beware of his false knowledge: it is more dangerous than ignorance.
Activity is the only road to knowledge.
Every fool believes what his teachers tell him, and calls his credulity science or morality as confidently as his father called it divine revelation.
No man fully capable of his own language ever masters another.
No man can be a pure specialist without being in the strict sense an idiot.
Do not give your children moral and religious instruction unless you are quite sure they will not take it too seriously. Better be the mother of Henri Quatre and Nell Gwynne than of Robespierre and Queen Mary Tudor.

https://archive.org/details/in.ernet.dli.2015.208167/mode/2up.

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