Some recent philosophers seem to have lent moral support to these deplorable verdicts by asserting that an individual's intelligence is a fixed quantity, a quantity which cannot be increased. We must protest and react against this brutal pessimism.

The scale, strictly speaking, does not permit the measurement of intelligence, because intellectual qualities do not superimpose on one another and consequently cannot be measured as linear surfaces are measured.

The intelligence of these children is capable of being developed; with exercise and, above all, with method, we manage to increase their attention, their memory, their judgment.

To understand, to invent, to direct and to criticise: everything is there.

Philosophy is nothing other than the pursuit of nobility and goodness.

-- Gaius Musonius Rufus

Educate the children and it will not be necessary to punish the men.

-- Pythagoras

Fables should be taught as fables, myths as myths, and miracles as poetic fancies.

-- Hypatia

To teach superstitions as truth is a most terrible thing.

-- Hypatia

Learning without thought is labor lost; thought without learning is perilous.

-- Confucius

Blue dye is extracted from the indigo plant, yet it is bluer than indigo itself.

-- Xunzi